diff --git a/cps/translations/cs/LC_MESSAGES/messages.mo b/cps/translations/cs/LC_MESSAGES/messages.mo
index d2b34ece..24edf010 100644
Binary files a/cps/translations/cs/LC_MESSAGES/messages.mo and b/cps/translations/cs/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/cs/LC_MESSAGES/messages.po b/cps/translations/cs/LC_MESSAGES/messages.po
index 3a3474d0..82adc54c 100644
--- a/cps/translations/cs/LC_MESSAGES/messages.po
+++ b/cps/translations/cs/LC_MESSAGES/messages.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-06-09 21:11+0100\n"
 "Last-Translator: Lukas Heroudek <lukas.heroudek@gmail.com>\n"
 "Language: cs_CZ\n"
@@ -15,7 +15,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -29,48 +29,48 @@ msgstr "není nainstalováno"
 msgid "Statistics"
 msgstr "Statistika"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Server restartován, znovu načtěte stránku"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Vypínám server, zavřete okno"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Úspěšně obnovené připojení"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Neznámý příkaz"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Neznámý"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Stránka správce"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Konfigurace uživatelského rozhraní"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Uživatel admin"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Vše"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Uživatel nenalezen"
 
@@ -83,315 +83,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Zobrazit vše"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Nezbývá žádný správce, nelze odebrat roli správce"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Konfigurace Calibre-Web aktualizována"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Opravdu chcete odstranit Kobo token?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Jste si jisti, že chcete odstranit tuto polici?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Jste si jisti, že chcete odstranit tuto polici?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Jste si jisti, že chcete odstranit tuto polici?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Zakázat"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Povolit"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json není nakonfigurováno pro webové aplikace"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Umístění zápisového souboru není platné. Určete prosím platnou polohu"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Umístění zápisového souboru pro přístup není platné. Určete prosím platnou polohu"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Prosím zadejte LDAP poskytovatele, port, DN a Identifikátor objektu uživatele"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "Filtr objektů skupiny LDAP musí mít jeden “%s” formátový identifikátor"
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Filtr objektů skupiny LDAP má nesrovnatelnou závorku"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Filtr uživatelských objektů LDAP musí mít jeden “%s” formátový identifikátor"
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Filtr uživatelských objektů LDAP má nesrovnatelnou závorku"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "Umístění souboru klíčů není platné, zadejte prosím správnou cestu"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "Umístění certifikátu není platné, zadejte prosím správnou cestu"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "Umístění databáze není platné, opravte prosím cestu"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Databáze není zapisovatelná"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Základní konfigurace"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Vyplňte všechna pole!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-mail není z platné domény"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Přidat nového uživatele"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Uživatel '%(user)s' vytvořen"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Byl nalezen existující účet pro tuto e-mailovou adresu nebo přezdívku."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Uživatel '%(nick)s' smazán"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Nezbývá žádný správce, nemůžete jej odstranit"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Upravit uživatele %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Uživatel '%(nick)s' aktualizován"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Došlo k neznámé chybě."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Změnit SMTP nastavení"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Při odesílání zkušebního e-mailu došlo k chybě: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Prvně nastavte svou e-mailovou adresu..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Nastavení e-mailového serveru aktualizováno"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Heslo pro uživatele %(user)s resetováno"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Neznámá chyba. Opakujte prosím později."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Nejprve nakonfigurujte nastavení pošty SMTP..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Prohlížeč log souborů"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Požadování balíčku aktualizace"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Stahování balíčku aktualizace"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Rozbalování balíčku aktualizace"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Nahrazování souborů"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Databázová připojení jsou uzavřena"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Zastavuji server"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Aktualizace dokončena, klepněte na tlačítko OK a znovu načtěte stránku"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Aktualizace selhala:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP chyba"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Chyba připojení"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Vypršel časový limit při navazování spojení"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Všeobecná chyba"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Aktualizační soubor nemohl být uložen do Temp Dir"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Nepodařilo se vytvořit nejméně jednoho uživatele LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Chyba: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Chyba: Žádná reakce od uživatele LDAP serveru"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Nejméně jeden uživatel LDAP nenalezen v databázi"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/de/LC_MESSAGES/messages.mo b/cps/translations/de/LC_MESSAGES/messages.mo
index d0704dc1..c14cf26c 100644
Binary files a/cps/translations/de/LC_MESSAGES/messages.mo and b/cps/translations/de/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/de/LC_MESSAGES/messages.po b/cps/translations/de/LC_MESSAGES/messages.po
index 38b10e5b..63763ef6 100644
--- a/cps/translations/de/LC_MESSAGES/messages.po
+++ b/cps/translations/de/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2021-02-02 19:04+0100\n"
 "Last-Translator: Ozzie Isaacs\n"
 "Language: de\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,48 +30,48 @@ msgstr "Nicht installiert"
 msgid "Statistics"
 msgstr "Statistiken"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Server neu gestartet, Seite bitte neu laden"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Server wird heruntergefahren, Fenster bitte schließen"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Erfolgreich neu verbunden"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Unbekannter Befehl"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Unbekannt"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Admin Seite"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Benutzeroberflächenkonfiguration"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Administrator"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Alle"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Benutzer nicht gefunden"
 
@@ -85,315 +85,351 @@ msgstr "{} Benutzer erfolgreich importiert"
 msgid "Show All"
 msgstr "Zeige alle"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Kein Admin Benutzer verblieben Admin Berechtigung kann nicht entfernt werden"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Konfiguration von Calibre-Web wurde aktualisiert"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Möchten Sie wirklich den Kobo Token löschen?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr "Möchten Sie wirklich diese Domain löschen?"
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr "Möchten Sie wirklich diesen Benutzer löschen?"
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Möchten Sie wirklich dieses Bücherregal löschen?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Möchten Sie wirklich dieses Bücherregal löschen?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Möchten Sie wirklich dieses Bücherregal löschen?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Verbieten"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Erlauben"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json ist nicht für Web Anwendungen konfiguriert"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Logdatei Pfad ist ungültig, bitte einen gültigen Pfad angeben"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Zugriffs Logdatei Pfad ist ungültig, bitte einen gültigen Pfad angeben"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Bitte einen LDAP Server, Port, DN und Benutzer Objekt angeben"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Gruppen Objekt Filter benötigt genau eine \"%s\" Format Kennung"
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP Gruppen Objekt Filter hat ungleiche Anzahl von Klammern"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Benutzer Objekt Filter benötigt genau eine \"%s\" Format Kennung"
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP Benutzer Objekt Filter hat ungleiche Anzahl von Klammern"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Der LDAP Member User Filter benötigt genau eine \"%s\" Formatierungsmarkierung"
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr "LDAP Member User Filter hat eine ungleiche Anzahl von geöffneten und geschlossenen Klammern"
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr "LDAP CA-Zertifikat, Zertifikat oder Key Datei ist kein gültiger Pfad"
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "Schlüsseldatei ist ungültig, bitte einen gültigen Pfad angeben"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "Zertifikatsdatei ist ungültig, bitte einen gültigen Pfad angeben"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "Einstellungsdatenbank ist nicht schreibbar"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "DB Pfad ist nicht gültig, bitte einen gültigen Pfad angeben"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Datenbank ist nicht schreibbar"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Basiskonfiguration"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Bitte alle Felder ausfüllen!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-Mail bezieht sich nicht auf eine gültige Domain"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Neuen Benutzer hinzufügen"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Benutzer '%(user)s' angelegt"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Es existiert bereits ein Account für diese E-Mailadresse oder diesen Benutzernamen."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Benutzer '%(nick)s' gelöscht"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Benutzer kann nicht gelöscht werden, es wäre kein Admin Benutzer übrig"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Benutzer %(nick)s bearbeiten"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Benutzer '%(nick)s' aktualisiert"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Es ist ein unbekannter Fehler aufgetreten."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "SMTP-Einstellungen ändern"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Es trat ein Fehler beim Versenden der Test-E-Mail auf: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Bitte zuerst E-Mail Adresse konfigurieren..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Einstellungen des E-Mail-Servers aktualisiert"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Passwort für Benutzer %(user)s wurde zurückgesetzt"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Es ist ein unbekannter Fehler aufgetreten. Bitte später erneut versuchen."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Bitte zuerst die SMTP-Einstellung konfigurieren ..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Logdatei Anzeige"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Frage Update an"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Lade Update herunter"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Entpacke Update"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Ersetze Dateien"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Schließe Datenbankverbindungen"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Stoppe Server"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Update abgeschlossen, bitte okay drücken und Seite neu laden"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Update fehlgeschlagen:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP Fehler"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Verbindungsfehler"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Timeout beim Verbindungsaufbau"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Allgemeiner Fehler"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Updatedatei konnte nicht in Temporärem Ordner gespeichert werden"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Mindestens ein LDAP Benutzer konnte nicht erzeugt werden"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Fehler: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Fehler: Keine Benutzerinformationen von LDAP Server empfangen"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Mindestens ein LDAP Benutzer wurde nicht in der Datenbank gefudnen"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr "{} Benutzer erfolgreich importiert"
 
diff --git a/cps/translations/el/LC_MESSAGES/messages.mo b/cps/translations/el/LC_MESSAGES/messages.mo
index 2e96923c..6db7d37c 100644
Binary files a/cps/translations/el/LC_MESSAGES/messages.mo and b/cps/translations/el/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/el/LC_MESSAGES/messages.po b/cps/translations/el/LC_MESSAGES/messages.po
index 0d040dd6..bf9ab997 100644
--- a/cps/translations/el/LC_MESSAGES/messages.po
+++ b/cps/translations/el/LC_MESSAGES/messages.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Depountis Georgios\n"
 "Language: el\n"
@@ -15,7 +15,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -29,48 +29,48 @@ msgstr "δεν εγκαταστάθηκε"
 msgid "Statistics"
 msgstr "Στατιστικά"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Ο διακομιστής επανεκκίνησε, παρακαλούμε φόρτωσε ξανά τη σελίδα"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Πραγματοποιείται κλείσιμο του διακομιστή, παρακαλούμε κλείσε το παράθυρο"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Επιτυχής επανασύνδεση"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Άγνωστη εντολή"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "ʼΑγνωστο"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Σελίδα διαχειριστή"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "UI Διαμόρφωση"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Χρήστης Διαχειριστής"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Όλα"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Δεν βρέθηκε χρήστης"
 
@@ -83,315 +83,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Προβολή Όλων"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Δεν έχει απομείνει χρήστης διαχειριστής, δεν μπορεί να αφαιρεθεί ο ρόλος διαχειριστή"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Ενημερώθηκε η διαμόρφωση Calibre-Web"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Θέλεις πραγματικά να διαγράψεις τη Μονάδα Kobo;"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Είσαι σίγουρος/η πως θέλεις να διαγράψεις αυτό το ράφι;"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Είσαι σίγουρος/η πως θέλεις να διαγράψεις αυτό το ράφι;"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Είσαι σίγουρος/η πως θέλεις να διαγράψεις αυτό το ράφι;"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Απόρριψη"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Επιτρέπεται"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json Δεν Έχει Διαμορφωθεί Για Διαδικτυακή Εφαρμογή"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Το Φύλλο Καταγραφής Τοποθεσίας δεν είναι Έγκυρο, Παρακαλούμε Συμπλήρωσε Τη Σωστή Πορεία"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Η Πρόσβαση Φύλλου Καταγραφης Τοποθεσίας δεν είναι έγκυρη, Παρακαλούμε Συμπλήρωσε Τη Σωστή Πορεία"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Παρακαλούμε Συμπλήρωσε ένα Πάροχο LDAP, Θύρα, DN και Αντικείμενο Αναγνώρισης Χρήστη"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "Το Αντικείμενο Φίλτρου Ομάδας LDAP Πρέπει να Έχει Μια \"%s\" Αναγνώριση Μορφής"
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Το Αντικείμενο Φίλτρου Ομάδας LDAP Έχει Παρενθέσεις Που Δεν Ταιριάζουν"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Το Αντικείμενο Φίλτρου Χρήστη LDAP πρέπει να Έχει Μια \"%s\" Αναγνώριση Μορφής"
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Το Αντικείμενο Φίλτρου Χρήστη LDAP Έχει Παρενθέσεις Που Δεν Ταιριάζουν"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "Το Αρχειο Κλειδί Τοποθεσίας δεν είναι Έγκυρο, Παρακαλούμε Συμπληρώστε Τη Σωστή Πορεία"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "Η Τοποθεσία Certfile δεν είναι Έγκυρη, Παρακαλούμε Συμπληρώστε Τη Σωστή Πορεία"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "Οι ρυθμίσεις DB δεν μπορούν να Γραφτούν"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "Η Τοποθεσία DB δεν είναι Έγκυρη, Παρακαλούμε Συμπληρώστε Τη Σωστή Πορεία"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Η DB δεν μπορεί να Γραφτεί"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Βασική Διαμόρφωση"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Παρακαλούμε συμπλήρωσε όλα τα πεδία!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "Το E-mail δεν είναι από έγκυρο domain"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Προσθήκη νέου χρήστη"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Χρήστης/ες '%(user)s' δημιουργήθηκαν"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Βρέθηκε ένας ήδη υπάρχον λογαριασμός για αυτή τη διεύθυνση e-mail ή όνομα χρήστη."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Χρήστης/ες '%(nick)s' διαγράφηκαν"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Δεν έχει απομείνει χρήστης διαχειριστής, δεν μπορεί να διαγραφεί ο χρήστης"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Επεξεργασία χρήστη %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Χρήστης/ες '%(nick)s' ενημερώθηκαν"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Προέκυψε ένα άγνωστο σφάλμα."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Επεξεργασία Ρυθμίσεων E-mail Διακομιστή"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Παρουσιάστηκε σφάλμα κατά την αποστολή του δοκιμαστικού e-mail:% (res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Παρακαλούμε ρύθμισε πρώτα τη διεύθυνση e-mail σου..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Ενημερώθηκαν οι ρυθμίσεις E-mail διακομιστή"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Κωδικός για επαναφορά %(user) χρήστη/ών"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Προέκυψε ένα άγνωστο σφάλμα. Παρακαλούμε δοκίμασε ξανά αργότερα."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Παρακαλούμε διαμόρφωσε πρώτα τις ρυθμίσεις ταχυδρομείου SMTP..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Προβολέας αρχείου φύλλου καταγραφής"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Αίτημα πακέτου ενημέρωσης"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Κατεβάζει πακέτο ενημέρωσης"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Ανοίγει πακέτο ενημέρωσης"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Αντικατάσταση αρχείων"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Οι συνδέσεις βάσης δεδομένων είναι κλειστές"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Σταματάει το διακομιστή"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Η ενημέρωση τελειώσε, παρακαλούμε πιέστε το εντάξει και φορτώστε ξανά τη σελίδα"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Η ενημέρωση απέτυχε:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP Σφάλμα"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Σφάλμα σύνδεσης"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Τελείωσε ο χρόνος κατά την προσπάθεια δημιουργίας σύνδεσης"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Γενικό σφάλμα"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Το Αρχείο Ενημέρωσης Δεν Μπόρεσε Να Αποθηκευτεί σε"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Αποτυχία Δημιουργίας Τουλάχιστον Ενός Χρήστη LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Σφάλμα: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Σφάλμα: Δεν επιστράφηκε χρήστης σε απάντηση του διακομιστή LDAP"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Τουλάχιστον Ένας Χρήστης LDAP Δεν Βρέθηκε Στη Βάση Δεδομένων"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/es/LC_MESSAGES/messages.mo b/cps/translations/es/LC_MESSAGES/messages.mo
index bf5cfdf4..6d7ba02e 100644
Binary files a/cps/translations/es/LC_MESSAGES/messages.mo and b/cps/translations/es/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/es/LC_MESSAGES/messages.po b/cps/translations/es/LC_MESSAGES/messages.po
index 3d564257..9ea8fdc6 100644
--- a/cps/translations/es/LC_MESSAGES/messages.po
+++ b/cps/translations/es/LC_MESSAGES/messages.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-05-25 17:22+0200\n"
 "Last-Translator: minakmostoles <xxx@xxx.com>\n"
 "Language: es\n"
@@ -18,7 +18,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -33,48 +33,48 @@ msgstr "no instalado"
 msgid "Statistics"
 msgstr "Estadísticas"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Servidor reiniciado. Por favor, recargue la página"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "El servidor se está apagando. Por favor, cierre la ventana"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Reconexión correcta"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Comando desconocido"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Desconocido"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Página de administración"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Configuración de la interfaz de usuario"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Usuario administrador"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Todo"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Usuario no encontrado"
 
@@ -87,315 +87,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Mostrar todo"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "No queda ningún usuario administrador, no se puede eliminar al usuario"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Configuración de Calibre-Web actualizada"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "¿Realmente quieres borrar el Token de Kobo?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "¿Realmente quiere eliminar este estante?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "¿Realmente quiere eliminar este estante?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "¿Realmente quiere eliminar este estante?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Denegar"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Permitir"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json no está configurado para la aplicación web"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "La ruta del Logfile no es válida. Por favor, introduzca la ruta correcta"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "La ruta del Access Logfile no es válida. Por favor, introduzca la ruta correcta"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Por favor, introduzca un proveedor LDAP, puerto, DN y el User Object Identifier"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Group Object Filter necesita tener un identificador de formato \"%s\""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "El LDAP Group Object Filter tiene un paréntesis diferente"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Group Object Filter necesita tener un identificador de formato \"%s\""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "El LDAP Group Object Filter tiene un paréntesis diferente"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "La ruta del Keyfile no es válida, por favor, introduzca la ruta correcta"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "La ruta de Certfile no es válida, por favor, introduzca la ruta correcta"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "La base de datos de configuración no es modificable"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "La ruta de la base de datos no es válida. Por favor, introduzca la ruta correcta"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "La base de datos no es modificable"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Configuración básica"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "¡Por favor, completa todos los campos!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "El correo electrónico no tiene un dominio válido"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Añadir un nuevo usuario"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Usuario '%(user)s' creado"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Encontrada una cuenta existente para este correo electrónico o nombre de usuario."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Usuario '%(nick)s' borrado"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "No queda ningún usuario administrador, no se puede eliminar al usuario"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Editar Usuario %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Usuario '%(nick)s'  actualizado"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Ocurrió un error desconocido."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Cambiar parámetros de correo"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Ocurrió un error enviando el correo electrónico de prueba: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Por favor, configure su correo electrónico primero..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Actualizados los ajustes del servidor de correo electrónico"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Contraseña para el usuario %(user)s reinicializada"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Ha ocurrido un error desconocido. Por favor vuelva a intentarlo más tarde."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Configura primero los parámetros del servidor SMTP..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Visor del fichero de log"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Solicitando paquete de actualización"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Descargando paquete de actualización"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Descomprimiendo paquete de actualización"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Remplazando archivos"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Los conexiones con la base datos están cerradas"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Parando el servidor"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Actualización finalizada. Por favor, pulse OK y recargue la página"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Falló la actualización:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Error HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Error de conexión"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Tiempo agotado mientras se trataba de establecer la conexión"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Error general"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "La actualización del archivo no pudo guardarse en el directorio temporal (Temp Dir)"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Error al crear al menos un usuario LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Error: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Error: el servidor LDAP no ha devuelto ningún usuario"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Al menos, un usuario LDAP no se ha encontrado en la base de datos"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/fi/LC_MESSAGES/messages.mo b/cps/translations/fi/LC_MESSAGES/messages.mo
index 7739d7b5..e98647ed 100644
Binary files a/cps/translations/fi/LC_MESSAGES/messages.mo and b/cps/translations/fi/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/fi/LC_MESSAGES/messages.po b/cps/translations/fi/LC_MESSAGES/messages.po
index b09812b7..a705dd4f 100644
--- a/cps/translations/fi/LC_MESSAGES/messages.po
+++ b/cps/translations/fi/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-01-12 13:56+0100\n"
 "Last-Translator: Samuli Valavuo <svalavuo@gmail.com>\n"
 "Language: fi\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,48 +30,48 @@ msgstr "ei asennettu"
 msgid "Statistics"
 msgstr "Tilastot"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Palvelin uudelleenkäynnistetty, ole hyvä ja päivitä sivu"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Palvelinta sammutetaan, ole hyvä ja sulje sivu"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Tuntematon"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Ylläpitosivu"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Käyttöliittymän asetukset"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Pääkäyttäjä"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Kaikki"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -84,315 +84,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Näytä kaikki"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web asetukset päivitetty"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Oletko varma, että haluat poistaa hyllyn?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Oletko varma, että haluat poistaa hyllyn?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Oletko varma, että haluat poistaa hyllyn?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Perusasetukset"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Ole hyvä ja täytä kaikki kentät!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "Sähköpostiosoite ei ole toimivasta domainista"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Lisää uusi käyttäjä"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Käyttäjä '%(user)s' lisätty"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Tälle sähköpostiosoitteelle tai tunnukselle löytyi jo tili."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Käyttäjä '%(nick)s' poistettu"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Pääkäyttäjiä ei jää jäljelle, käyttäjää ei voi poistaa"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Muokkaa käyttäjää %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Käyttäjä '%(nick)s' päivitetty"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Tapahtui tuntematon virhe."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Muuta SMTP asetuksia"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Testisähköpostin lähetyksessä tapahtui virhe: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Sähköpostipalvelimen tiedot päivitetty"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Käyttäjän %(user)s salasana palautettu"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Tapahtui tuntematon virhe. Yritä myöhemmin uudelleen."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Ole hyvä ja aseta SMTP postiasetukset ensin..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Lokitiedoston katselin"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Haetaan päivitystiedostoa"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Ladataan päivitystiedostoa"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Puretaan päivitystiedostoa"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Korvataan tiedostoja"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Tietokantayhteydet on katkaistu"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Sammutetaan palvelin"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Päivitys valmistui, ole hyvä ja paina OK ja lataa sivu uudelleen"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Päivitys epäonnistui:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP virhe"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Yhteysvirhe"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Aikakatkaisu yhteyttä luotaessa"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Yleinen virhe"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/fr/LC_MESSAGES/messages.mo b/cps/translations/fr/LC_MESSAGES/messages.mo
index 63c8cc08..49f57309 100644
Binary files a/cps/translations/fr/LC_MESSAGES/messages.mo and b/cps/translations/fr/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/fr/LC_MESSAGES/messages.po b/cps/translations/fr/LC_MESSAGES/messages.po
index 7ce1d3f3..0588d41b 100644
--- a/cps/translations/fr/LC_MESSAGES/messages.po
+++ b/cps/translations/fr/LC_MESSAGES/messages.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-06-07 06:47+0200\n"
 "Last-Translator: Dekani <dekani1500@gmail.com>\n"
 "Language: fr\n"
@@ -30,7 +30,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -44,48 +44,48 @@ msgstr "non installé"
 msgid "Statistics"
 msgstr "Statistiques"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Serveur redémarré, merci de rafraîchir la page"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Arrêt du serveur en cours, merci de fermer la fenêtre"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Reconnecté avec succès"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Commande inconnue"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Inconnu"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Page admin"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Configuration de l’interface utilisateur"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Utilisateur admin"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Tout"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "L'utilisateur n'a pas été trouvé"
 
@@ -98,315 +98,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Montrer tout"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Aucun utilisateur admin restant, impossible de supprimer le rôle admin"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Configuration de Calibre-Web mise à jour"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Voulez-vous vraiment supprimer le jeton Kobo?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Voulez-vous vraiment supprimer l’étagère?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Voulez-vous vraiment supprimer l’étagère?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Voulez-vous vraiment supprimer l’étagère?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Refuser"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Autoriser"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json n'est pas configuré pour l'application Web"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "L'emplacement du fichier logfile est incorrect, veuillez saisir un chemin valide"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "L'emplacement du fichier Access Logfile est incorrect, veuillez saisir un chemin valide"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Veuillez saisir un fournisseur LDAP, Port, DN et l'identifiant objet de l'utilisateur"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "Le filtre objet du groupe LDAP a besoin d'un identifiant de format \"%s\""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Le filtre objet du groupe LDAP a une parenthèse non gérée"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Le filtre objet de l'utilisateur LDAP a besoin d'un identifiant de format \"%s\""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Le filtre objet de l'utilisateur LDAP a une parenthèse non gérée"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "L'emplacement du fichier Keyfile est incorrect, veuillez saisir un chemin valide"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "L'emplacement du fichier Certfile est incorrect, veuillez saisir un chemin valide"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "L'emplacement DB est incorrect, veuillez saisir un chemin valide"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "La DB n'est pas accessible en écriture"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Configuration principale"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Veuillez compléter tous les champs !"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "Cette adresse de courriel n’appartient pas à un domaine valide"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Ajouter un nouvel utilisateur"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Utilisateur '%(user)s' créé"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Un compte existant a été trouvé pour cette adresse de courriel ou pour ce surnom."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Utilisateur '%(nick)s' supprimé"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Aucun utilisateur admin restant, impossible de supprimer l’utilisateur"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Éditer l'utilisateur %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Utilisateur '%(nick)s'  mis à jour"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Oups ! Une erreur inconnue a eu lieu."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Modifier les paramètres du serveur de courriels"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Il y a eu une erreur pendant l’envoi du courriel de test : %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Veuillez d'abord configurer votre adresse de courriel..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Les paramètres du serveur de courriels ont été mis à jour"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Le mot de passe de l’utilisateur %(user)s a été réinitialisé"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Une erreur inconnue est survenue. Veuillez réessayer plus tard."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Veuillez configurer les paramètres SMTP au préalable..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Visualiseur de fichier journal"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Demande de mise à jour"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Téléchargement de la mise à jour"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Décompression de la mise à jour"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Remplacement des fichiers"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Les connexions à la base de données ont été fermées"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Arrêt du serveur"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Mise à jour terminée, merci d’appuyer sur okay et de rafraîchir la page"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "La mise à jour a échoué :"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Erreur HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Erreur de connexion"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Délai d'attente dépassé lors de l'établissement de connexion"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Erreur générale"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Le fichier de mise à jour ne peut pas être sauvegardé dans le répertoire temporaire"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Impossible de créer au moins un utilisateur LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Erreur : %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Erreur : Aucun utilisateur renvoyé dans la réponse LDAP du serveur"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Au moins un utilisateur LDAP n'a pas été trouvé dans la base de données"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/hu/LC_MESSAGES/messages.mo b/cps/translations/hu/LC_MESSAGES/messages.mo
index 56bd84b9..277c70b2 100644
Binary files a/cps/translations/hu/LC_MESSAGES/messages.mo and b/cps/translations/hu/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/hu/LC_MESSAGES/messages.po b/cps/translations/hu/LC_MESSAGES/messages.po
index f9ade8fc..5d1cc0d7 100644
--- a/cps/translations/hu/LC_MESSAGES/messages.po
+++ b/cps/translations/hu/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2019-04-06 23:36+0200\n"
 "Last-Translator: \n"
 "Language: hu\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,47 +30,47 @@ msgstr "nincs telepítve"
 msgid "Statistics"
 msgstr "Statisztika"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "A kiszolgáló újraindult, tölts be újra az oldalt!"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "A kiszolgáló leállítása folyamatban, zárd be ezt az ablakot"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Ismeretlen"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Rendszergazda oldala"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Felhasználói felület beállításai"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Rendszergazda felhasználó"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr ""
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -83,315 +83,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Mindent mutass"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "A Calibre-Web konfigurációja frissítve."
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Valóban törölni akarod a polcot?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Valóban törölni akarod a polcot?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Valóban törölni akarod a polcot?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Alapvető beállítások"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Az összes mezőt ki kell tölteni!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "Az e-mail tartománya nem érvényes."
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Új felhasználó hozzáadása"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "A következő felhasználó létrehozva: %(user)s"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Már létezik felhasználó ehhez az e-mail címhez vagy felhasználói névhez."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "A felhasználó törölve: %(nick)s"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr ""
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr " A felhasználó szerkesztése: %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "A felhasználó frissítve: %(nick)s"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Ismeretlen hiba történt."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "SMTP beállítások változtatása"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Hiba történt a teszt levél küldése során: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Az e-mail kiszolgáló beállításai frissítve."
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "A(z) %(user)s felhasználó jelszavának alaphelyzetbe állítása"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Ismeretlen hiba történt. Próbáld újra később!"
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Először be kell állítani az SMTP levelező beállításokat..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr ""
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Frissítési csomag kérése"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Frissítési csomag letöltése"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Frissítési csomag kitömörítése"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Fájlok cserélése"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Adatbázis kapcsolatok lezárva"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Szerver leállítása"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "A frissítés települt, kattints az OK-ra és újra tölt az oldal"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "A frissítés nem sikerült:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP hiba"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Kapcsolódási hiba"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Időtúllépés a kapcsolódás során"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Általános hiba"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/it/LC_MESSAGES/messages.mo b/cps/translations/it/LC_MESSAGES/messages.mo
index b1988442..36e5189a 100644
Binary files a/cps/translations/it/LC_MESSAGES/messages.mo and b/cps/translations/it/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/it/LC_MESSAGES/messages.po b/cps/translations/it/LC_MESSAGES/messages.po
index ba04575e..b8936aa6 100644
--- a/cps/translations/it/LC_MESSAGES/messages.po
+++ b/cps/translations/it/LC_MESSAGES/messages.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2017-04-04 15:09+0200\n"
 "Last-Translator: ElQuimm <quimm@webtaste.com>\n"
 "Language: it\n"
@@ -15,7 +15,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -29,46 +29,46 @@ msgstr "non installato"
 msgid "Statistics"
 msgstr "Statistiche"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Server riavviato, per favore ricarica la pagina"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Eseguo l'arresto del server, per favore chiudi la finestra"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Ricollegato con successo"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Comando sconosciuto"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Sconosciuto"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Pagina di amministrazione"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Configurazione dell'interfaccia utente"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 msgid "Edit Users"
 msgstr "Modifica gli utenti"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr "tutti"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Utente non trovato"
 
@@ -82,313 +82,349 @@ msgstr "{} utente importato con successo"
 msgid "Show All"
 msgstr "tutte le lingue presenti"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr "Il nome dell'utente Guest (ospite) non può essere modificato"
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr "L'utente Guest (ospite) non può avere questo ruolo"
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Non rimarrebbe nessun utente amministratore, non posso rimuovere il ruolo di amministratore"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr " L'utente Guest (ospite) non può avere questa schermata"
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr "Le impostazioni locali dell'utente Guest (ospite) sono determinate automaticamente e non possono essere configurate"
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "La configurazione di Calibre-Web è stata aggiornata"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Vuoi veramente eliminare il token di Kobo?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr "Vuoi veramente eliminare questo dominio?"
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr "Vuoi veramente eliminare questo utente?"
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Vuoi veramente eliminare questo scaffale?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Sei sicuro di voler modificare le impostazioni locali dell'/degli utente/i selezionato/i?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr "Sei sicuro di voler modificare le impostazioni delle lingue visualizzabili dell'/degli utente/i selezionato/i?"
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr "Sei sicuro di voler modificare il ruolo evidenziato dell'/degli utente/i selezionato/i?"
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Sei sicuro di voler modificare le impostazioni delle restrizioni di visualizzazione dell'/degli utente/i selezionato/i?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr "Sei sicuro di voler modificare le impostazioni delle restrizioni di visualizzazione dell'/degli utente/i selezionato/i?"
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Nega"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Permetti"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json non è configurato per Web Application"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "La posizione del Logfile non è valida, per favore indica il percorso corretto"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "La posizione dell'Access Logfile non è valida, per favore indica il percorso corretto"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Per favore digita un Provider LDAP, porta, DN e User Object Identifier"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Group Object Filter deve avere un \"%s\" Format Identifier"
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP Group Object Filter contiene una parentesi senza la corrispettiva"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP User Object Filter deve avere un \"%s\" Format Identifier"
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP User Object Filter contiene una parentesi senza la corrispettiva"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP Member User Filter deve avere un \"%s\" Format Identifier"
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr "LDAP Member User Filter contiene una parentesi senza la corrispettiva"
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr "LDAP CACertificate, il certificato o la posizione della chiave non sono corretti, per favore indica il percorso corretto"
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "La posizione del Keyfile non è valida, per favore indica il percorso corretto"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "La posizione del Certfile non è valida, per favore indica il percorso corretto"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "I parametri del DB non sono scrivibili"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "La posizione del DB non è valida, per favore indica il percorso corretto"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Il DB non è scrivibile"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Configurazione di base"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Per favore compila tutti i campi!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "L'e-mail non proviene da un dominio valido"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Aggiungi un nuovo utente"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "L'utente '%(user)s' è stato creato"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Trovato un account esistente con questo e-mail o nome di utente"
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "L'utente '%(nick)s' è stato eliminato"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr "Non posso eliminare l'utente Guest (ospite)"
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Non rimarrebbe nessun utente amministratore, non posso eliminare l'utente"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Modifica l'utente %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "L'utente '%(nick)s' è stato aggiornato"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Si è verificato un errore imprevisto."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Modifica le impostazioni del server e-mail"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr "L'account g-mail è stato verificato con successo"
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr "L'e-mail di test è stato accodato con successo per essere spedito a  %(email)s, per favore verifica tramite il pulsante 'Compito' il risultato"
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Si è verificato un errore nell'invio dell'e-mail di test: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Per favore prima configura il tuo indirizzo e-mail..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Configurazione del server e-mail aggiornata"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "La password dell'utente %(user)s è stata resettata"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Si è verificato un errore sconosciuto: per favore riprova."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Configura dapprima le impostazioni del server SMTP..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Visualizzatore del Logfile"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Richiedo il pacchetto di aggiornamento"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Scarico il pacchetto di aggiornamento"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Decomprimo il pacchetto di aggiornamento"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Sostituisco i file"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Le connessioni al database sono chiuse"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Arresto il server"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Aggiornamento completato, per favore premi ok e ricarica la pagina"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Aggiornamento non riuscito:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Errore HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Errore di connessione"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Tempo scaduto nello stabilire la connessione"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Errore generale"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Il file di aggiornamento non può essere salvato nella cartella temporanea"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Fallita la creazione di almeno un utente LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Errore: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Errore: nessun utente restituito in risposta dal server LDAP"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Almeno un utente LDAP non è stato trovato nel database"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr "{} utente importato con successo"
 
diff --git a/cps/translations/ja/LC_MESSAGES/messages.mo b/cps/translations/ja/LC_MESSAGES/messages.mo
index 70cc2181..63f394e9 100644
Binary files a/cps/translations/ja/LC_MESSAGES/messages.mo and b/cps/translations/ja/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/ja/LC_MESSAGES/messages.po b/cps/translations/ja/LC_MESSAGES/messages.po
index 9aa9cd37..a5fc9009 100644
--- a/cps/translations/ja/LC_MESSAGES/messages.po
+++ b/cps/translations/ja/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2018-02-07 02:20-0500\n"
 "Last-Translator: white <space_white@yahoo.com>\n"
 "Language: ja\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,46 +30,46 @@ msgstr "インストールされていません"
 msgid "Statistics"
 msgstr "統計"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "サーバを再起動しました。ページを再読み込みしてください"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "サーバをシャットダウンしています。ページを閉じてください"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "不明"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "管理者ページ"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "UI設定"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 msgid "Edit Users"
 msgstr ""
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr ""
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -82,313 +82,349 @@ msgstr ""
 msgid "Show All"
 msgstr ""
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web の設定を更新しました"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr ""
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "基本設定"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "全ての項目を入力してください"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "このメールは有効なドメインからのものではありません"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "新規ユーザ追加"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "ユーザ '%(user)s' を作成しました"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "このメールアドレスかニックネームで登録されたアカウントが見つかりました"
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "ユーザ '%(nick)s' を削除しました"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr ""
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "%(nick)s を編集"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "ユーザ '%(nick)s' を更新しました"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "不明なエラーが発生しました。"
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "SMTP設定を変更"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "テストメールを %(res)s に送信中にエラーが発生しました"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "メールサーバの設定を更新しました"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "%(user)s 用のパスワードをリセット"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "不明なエラーが発生しました。あとで再試行してください。"
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "初めにSMTPメールの設定をしてください"
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr ""
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "更新データを要求中"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "更新データをダウンロード中"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "更新データを展開中"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "ファイルを置換中"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "データベースの接続を切断完了"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "サーバ停止中"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "アップデート完了、OKを押してページをリロードしてください"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "アップデート失敗:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTPエラー"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "接続エラー"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "接続を確立中にタイムアウトしました"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "エラー発生"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/km/LC_MESSAGES/messages.mo b/cps/translations/km/LC_MESSAGES/messages.mo
index 6a7d8c43..66baa640 100644
Binary files a/cps/translations/km/LC_MESSAGES/messages.mo and b/cps/translations/km/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/km/LC_MESSAGES/messages.po b/cps/translations/km/LC_MESSAGES/messages.po
index 0e69a536..f41271e2 100644
--- a/cps/translations/km/LC_MESSAGES/messages.po
+++ b/cps/translations/km/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2018-08-27 17:06+0700\n"
 "Last-Translator: \n"
 "Language: km_KH\n"
@@ -17,7 +17,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -31,47 +31,47 @@ msgstr "មិនបានតម្លើង"
 msgid "Statistics"
 msgstr "ស្ថិតិ"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "ម៉ាស៊ីន server បានដំណើរការម្តងទៀត សូមបើកទំព័រជាថ្មី"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "កំពុងបិទម៉ាស៊ីន server សូមបិទផ្ទាំងនេះ"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "មិនដឹង"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "ទំព័ររដ្ឋបាល"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "ការកំណត់ផ្ទាំងប្រើប្រាស់"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "អ្នកប្រើប្រាស់រដ្ឋបាល"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr ""
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -84,314 +84,350 @@ msgstr ""
 msgid "Show All"
 msgstr "បង្ហាញទាំងអស់"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr ""
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "តើអ្នកពិតជាចង់លុបធ្នើនេះមែនទេ?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "តើអ្នកពិតជាចង់លុបធ្នើនេះមែនទេ?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "តើអ្នកពិតជាចង់លុបធ្នើនេះមែនទេ?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "ការកំណត់សាមញ្ញ"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "សូមបំពេញចន្លោះទាំងអស់!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr ""
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "បន្ថែមអ្នកប្រើប្រាស់ថ្មី"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "បានបង្កើតអ្នកប្រើប្រាស់ ‘%(user)s’"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 msgid "Found an existing account for this e-mail address or name."
 msgstr ""
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "អ្នកប្រើប្រាស់ ‘%(nick)s’ ត្រូវបានលុប"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr ""
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "កែប្រែអ្នកប្រើប្រាស់ %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "អ្នកប្រើប្រាស់ ‘%(nick)s’ ត្រូវបានកែប្រែ"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "បញ្ហាដែលមិនដឹងបានកើតឡើង។"
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "ប្តូរការកំណត់ SMTP"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr ""
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr ""
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr ""
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr ""
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "សូមកំណត់អ៊ីមែល SMTP ជាមុនសិន"
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr ""
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "កំពុងស្នើសុំឯកសារបច្ចុប្បន្នភាព"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "កំពុងទាញយកឯកសារបច្ចុប្បន្នភាព"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "កំពុងពន្លាឯកសារបច្ចុប្បន្នភាព"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr ""
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "ទំនាក់ទំនងទៅមូលដ្ឋានទិន្នន័យត្រូវបានផ្តាច់"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr ""
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "ការធ្វើបច្ចុប្បន្នភាពបានបញ្ចប់ សូមចុច okay រួចបើកទំព័រជាថ្មី"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr ""
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr ""
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr ""
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr ""
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr ""
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/nl/LC_MESSAGES/messages.mo b/cps/translations/nl/LC_MESSAGES/messages.mo
index abba5346..d97055f5 100644
Binary files a/cps/translations/nl/LC_MESSAGES/messages.mo and b/cps/translations/nl/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/nl/LC_MESSAGES/messages.po b/cps/translations/nl/LC_MESSAGES/messages.po
index 9405e6c9..86f5faa0 100644
--- a/cps/translations/nl/LC_MESSAGES/messages.po
+++ b/cps/translations/nl/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Calibre-Web (GPLV3)\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-12-12 08:20+0100\n"
 "Last-Translator: Marcel Maas <marcel.maas@outlook.com>\n"
 "Language: nl\n"
@@ -17,7 +17,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -31,48 +31,48 @@ msgstr "niet geïnstalleerd"
 msgid "Statistics"
 msgstr "Statistieken"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "De server is herstart, vernieuw de pagina"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Bezig met afsluiten van de server, sluit het venster"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Opnieuw verbinden gelukt"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Onbekende opdracht"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Onbekend"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Systeembeheer"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Uiterlijk aanpassen"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Systeembeheerder"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Alles"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Gebruiker niet gevonden"
 
@@ -85,315 +85,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Alle talen"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Kan systeembeheerder rol niet verwijderen van de laatste systeembeheerder"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web-configuratie bijgewerkt"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Wil je werkelijk je Kobo Token verwijderen?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Weet je zeker dat je deze boekenplank wilt verwijderen?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Weet je zeker dat je deze boekenplank wilt verwijderen?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Weet je zeker dat je deze boekenplank wilt verwijderen?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Weigeren"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Toestaan"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json is niet geconfigureerd voor webapplicatie"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "De locatie van het logbestand is onjuist, voer een geldige locatie in"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "De locatie vam het toegangslog is onjuist, voer een geldige locatie in"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "SSL-sleutellocatie is niet geldig, voer een geldige locatie in"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "SSL-certificaatlocatie is niet geldig, voer een geldige locatie in"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "Instellingen niet opgeslagen"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "Database niet gevonden, voer de juiste locatie in"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Kan niet schrijven naar database"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Basis configuratie"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Vul alle velden in!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "Het e-mailadres bevat geen geldige domeinnaam"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Gebruiker toevoegen"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Gebruiker '%(user)s' aangemaakt"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Bestaand account met dit e-mailadres of deze gebruikersnaam aangetroffen."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Gebruiker '%(nick)s' verwijderd"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Kan laatste systeembeheerder niet verwijderen"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Gebruiker '%(nick)s' bewerken"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Gebruiker '%(nick)s' bijgewerkt"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Er is een onbekende fout opgetreden."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "SMTP-instellingen bewerken"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Fout opgetreden bij het versturen van de test-e-mail: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Gelieve eerst je e-mail adres configureren..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "E-mailserver-instellingen bijgewerkt"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Wachtwoord voor gebruiker %(user)s is hersteld"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Onbekende fout opgetreden. Probeer het later nog eens."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Stel eerst SMTP-mail in..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Logbestand lezer"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Update opvragen"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Update downloaden"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Update uitpakken"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Update toepassen"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Databaseverbindingen zijn gesloten"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Bezig met stoppen van Calibre-Web"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Update voltooid, klik op 'Oké' en vernieuw de pagina"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Update mislukt:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP-fout"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Verbindingsfout"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Time-out tijdens maken van verbinding"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Algemene fout"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Geüpload bestand kon niet opgeslagen worden in de tijdelijke map"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Fout: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Fout: No user returned in response of LDAP server"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/pl/LC_MESSAGES/messages.mo b/cps/translations/pl/LC_MESSAGES/messages.mo
index cf2c3682..2d16b7b7 100644
Binary files a/cps/translations/pl/LC_MESSAGES/messages.mo and b/cps/translations/pl/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/pl/LC_MESSAGES/messages.po b/cps/translations/pl/LC_MESSAGES/messages.po
index c04b5ae4..f0ea50b5 100644
--- a/cps/translations/pl/LC_MESSAGES/messages.po
+++ b/cps/translations/pl/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Calibre Web - polski (POT: 2019-08-06 18:35)\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-08-30 21:05+0200\n"
 "Last-Translator: Jerzy Piątek <jerzy.piatek@gmail.com>\n"
 "Language: pl\n"
@@ -17,7 +17,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -31,50 +31,50 @@ msgstr "nie zainstalowane"
 msgid "Statistics"
 msgstr "Statystyki"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Serwer uruchomiony ponownie, proszę odświeżyć stronę"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Wykonano wyłączenie serwera, proszę zamknąć okno"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Ponowne połączenie zakończono sukcesem"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Nieznane polecenie"
 
 # ???
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Nieznany"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Panel administratora"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Konfiguracja Interfejsu"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Użytkownik z uprawnieniami administratora"
 
 # ???
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Wszystko"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Nie znaleziono użytkownika"
 
@@ -87,317 +87,353 @@ msgstr ""
 msgid "Show All"
 msgstr "Pokaż wszystkie"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Nie można odebrać praw administratora. Brak na serwerze innego konta z prawami administratora"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Konfiguracja Calibre-Web została zaktualizowana"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Czy na pewno chcesz usunąć Token Kobo?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Czy na pewno chcesz usunąć półkę?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Czy na pewno chcesz usunąć półkę?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Czy na pewno chcesz usunąć półkę?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Zabroń"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Zezwalaj"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json nie został skonfigurowany dla aplikacji webowej"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Lokalizacja pliku dziennika jest nieprawidłowa, wprowadź poprawną ścieżkę"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Lokalizacja pliku dziennika dostępu jest nieprawidłowa, wprowadź poprawną ścieżkę"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Wprowadź dostawcę LDAP, port, nazwę wyróżniającą i identyfikator obiektu użytkownika"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "Filtr obiektów grupy LDAP musi mieć jeden identyfikator formatu \"% s\""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Filtr obiektów grupy LDAP ma niedopasowany nawias"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Filtr obiektów użytkownika LDAP musi mieć jeden identyfikator formatu \"% s\""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Filtr obiektów użytkownika LDAP ma niedopasowany nawias"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "Lokalizacja pliku klucza jest nieprawidłowa, wprowadź poprawną ścieżkę"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "Lokalizacja pliku certyfikatu jest nieprawidłowa, wprowadź poprawną ścieżkę"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "Baza danych ustawień nie jest zapisywalna"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "Lokalizacja bazy danych jest nieprawidłowa, wprowadź poprawną ścieżkę"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "Baza danych nie jest zapisywalna"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Konfiguracja podstawowa"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Proszę wypełnić wszystkie pola!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-mail nie pochodzi z prawidłowej domeny"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Dodaj nowego użytkownika"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Użytkownik '%(user)s' został utworzony"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Znaleziono istniejące konto dla tego adresu e-mail lub pseudonimu."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Użytkownik '%(nick)s' został usunięty"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Nie można usunąć użytkownika. Brak na serwerze innego konta z prawami administratora"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Edytuj użytkownika %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Użytkownik '%(nick)s' został zaktualizowany"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Wystąpił nieznany błąd."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Zmień ustawienia SMTP"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Wystąpił błąd podczas wysyłania e-maila testowego: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Najpierw skonfiguruj swój adres e-mail..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Zaktualizowano ustawienia serwera poczty e-mail"
 
 # ???
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Zrestartowano hasło użytkownika %(user)s"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Wystąpił nieznany błąd. Spróbuj ponownie później."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Proszę najpierw skonfigurować ustawienia SMTP poczty e-mail..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Przeglądanie dziennika"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Żądanie o pakiet aktualizacji"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Pobieranie pakietu aktualizacji"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Rozpakowywanie pakietu aktualizacji"
 
 # ???
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Zastępowanie plików"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Połączenia z bazą danych zostały zakończone"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Zatrzymywanie serwera"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Aktualizacja zakończona, proszę nacisnąć OK i odświeżyć stronę"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Aktualizacja nieudana:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Błąd HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Błąd połączenia"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Przekroczono limit czasu podczas nawiązywania połączenia"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Błąd ogólny"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Plik aktualizacji nie mógł zostać zapisany w katalogu tymczasowym"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Błąd przy tworzeniu przynajmniej jednego użytkownika LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Błąd: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Błąd. LDAP nie zwrócił żadnego użytkownika"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "Przynajmniej jeden użytkownik LDAP nie został znaleziony w bazie danych"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/pt_BR/LC_MESSAGES/messages.mo b/cps/translations/pt_BR/LC_MESSAGES/messages.mo
index 3e386557..519c6e41 100644
Binary files a/cps/translations/pt_BR/LC_MESSAGES/messages.mo and b/cps/translations/pt_BR/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/pt_BR/LC_MESSAGES/messages.po b/cps/translations/pt_BR/LC_MESSAGES/messages.po
index 5fd9603a..c4ef311b 100644
--- a/cps/translations/pt_BR/LC_MESSAGES/messages.po
+++ b/cps/translations/pt_BR/LC_MESSAGES/messages.po
@@ -4,7 +4,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: br\n"
@@ -13,7 +13,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -27,48 +27,48 @@ msgstr "não instalado"
 msgid "Statistics"
 msgstr "Estatística"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Servidor reiniciado, por favor recarregue a página"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Executando o desligamento do servidor, por favor, feche a janela"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Reconexão bem-sucedida"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Comando desconhecido"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Desconhecido"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Página de administração"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Configuração de UI"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Usuário Admin"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Todos"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "Usuário não encontrado"
 
@@ -82,315 +82,351 @@ msgstr "{} Usuário Importado com Sucesso"
 msgid "Show All"
 msgstr "Mostrar tudo"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "Nenhum usuário administrador restante, não pode remover a função de administrador"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Configuração do Calibre-Web atualizada"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Você realmente quer excluir o Kobo Token?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr "Você realmente quer excluir este domínio?"
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr "Você realmente quer excluir este usuário?"
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Tem certeza que quer apagar essa estante?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Tem certeza que quer apagar essa estante?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Tem certeza que quer apagar essa estante?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Negar"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Permita"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json não está configurado para aplicativo da web"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "A localização do arquivo de log não é válida, digite o caminho correto"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "A localização do arquivo de log de acesso não é válida, digite o caminho correto"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Digite um provedor LDAP, porta, DN e identificador de objeto do usuário"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "O filtro de objeto de grupo LDAP precisa ter um identificador de formato \"%s\""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Filtro de objeto de grupo LDAP tem parênteses incomparáveis"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "O filtro de objeto de usuário LDAP precisa ter um identificador de formato \"%s\""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Filtro de objeto de usuário LDAP tem parênteses incomparáveis"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr "O filtro de usuário membro do LDAP precisa ter um identificador de formato \"%s\""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr "Filtro de usuário de membro LDAP tem parênteses incomparáveis"
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr "LDAP CACertificate, Certificados ou chave de localização não é válida, Insira o caminho correto"
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "A localização do arquivo-chave não é válida, por favor insira o caminho correto"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "A localização do arquivo de certificação não é válida, digite o caminho correto"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "O banco de dados de configurações não é gravável"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "A localização do banco de dados não é válida, digite o caminho correto"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "DB não é gravável"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Configuração Básica"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Por favor, preencha todos os campos!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "O e-mail não é de um domínio válido"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Adicionar novo usuário"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Usuário '%(user)s' criado"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Encontrei uma conta existente para este endereço de e-mail ou apelido."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Usuário '%(nick)s' excluído"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Nenhum usuário administrador restante, não é possível excluir o usuário"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Editar usuário %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Usuário '%(nick)s' atualizado"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Ocorreu um erro desconhecido."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Editar configurações do servidor de e-mail"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Ocorreu um erro ao enviar o e-mail de teste: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Por favor, configure seu endereço de e-mail primeiro..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Atualização das configurações do servidor de e-mail"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Senha para redefinição do usuário %(user)s"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Ocorreu um erro desconhecido. Por favor, tente novamente mais tarde."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Por favor, configure primeiro as configurações de correio SMTP..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "visualizador de arquivo de registro"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Solicitação de pacote de atualização"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Download do pacote de atualização"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Descompactação de pacote de atualização"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Substituição de arquivos"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "As ligações à base de dados estão fechadas"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Parar servidor"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Atualização concluída, pressione okay e recarregue a página"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Atualização falhou:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Erro HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Erro de conexão"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Tempo limite durante o estabelecimento da conexão"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Erro geral"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Arquivo de atualização não pôde ser salvo no diretório temporário"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Falha na criação no mínimo de um usuário LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Erro: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Erro: Nenhum usuário retornado em resposta do servidor LDAP"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "No mínimo um usuário LDAP não encontrado no banco de dados"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr "{} Usuário Importado com Sucesso"
 
diff --git a/cps/translations/ru/LC_MESSAGES/messages.mo b/cps/translations/ru/LC_MESSAGES/messages.mo
index 5473d4ad..8669fd2e 100644
Binary files a/cps/translations/ru/LC_MESSAGES/messages.mo and b/cps/translations/ru/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/ru/LC_MESSAGES/messages.po b/cps/translations/ru/LC_MESSAGES/messages.po
index 65822711..0c174707 100644
--- a/cps/translations/ru/LC_MESSAGES/messages.po
+++ b/cps/translations/ru/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-04-29 01:20+0400\n"
 "Last-Translator: ZIZA\n"
 "Language: ru\n"
@@ -17,7 +17,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -31,48 +31,48 @@ msgstr "не установлено"
 msgid "Statistics"
 msgstr "Статистика"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Сервер перезагружен, пожалуйста, обновите страницу"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Производится остановка сервера, пожалуйста, закройте окно"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "Успешно переподключено"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "Неизвестная команда"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Неизвестно"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Администрирование"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Настройка интерфейса"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Управление сервером"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Все"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -85,315 +85,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Показать все"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Конфигурация Calibre-Web обновлена"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Вы действительно хотите удалить Kobo Token ?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Вы действительно хотите удалить эту книжную полку?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Вы действительно хотите удалить эту книжную полку?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Вы действительно хотите удалить эту книжную полку?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Запретить"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Разрешить"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json не настроен для веб-приложения"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Неправильное расположение файла журнала, пожалуйста, введите правильный путь."
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "Недопустимое расположение файла журнала доступа, пожалуйста, введите правильный путь"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "Пожалуйста, введите провайдера LDAP, порт, DN и идентификатор объекта пользователя"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "Фильтр объектов группы LDAP должен иметь один идентификатор формата \"%s\""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "Фильтр объектов группы LDAP имеет незавершённые круглые скобки"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "Фильтр объектов пользователя LDAP должен иметь один идентификатор формата \"%s\""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "Фильтр объектов пользователя LDAP имеет незавершенную круглую скобку"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "Расположение ключевого файла неверно, пожалуйста, введите правильный путь"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "Расположение Certfile не является действительным, пожалуйста, введите правильный путь"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "Расположение Базы Данных неверно, пожалуйста, введите правильный путь."
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Настройки сервера"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Пожалуйста, заполните все поля!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-mail не из существующей доменной зоны"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Добавить пользователя"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Пользователь '%(user)s' добавлен"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Для этого адреса электронной почты или логина уже есть учётная запись."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Пользователь '%(nick)s' удалён"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Это последний администратор, невозможно удалить пользователя"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Изменить пользователя %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Пользователь '%(nick)s' обновлён"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Произошла неизвестная ошибка."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Изменить настройки SMTP"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Произошла ошибка при отправке тестового письма на: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Пожалуйста, сначала настройте свой адрес электронной почты ..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "Настройки E-mail сервера обновлены"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Пароль для пользователя %(user)s сброшен"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Неизвестная ошибка. Попробуйте позже."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Пожалуйста, сперва настройте параметры SMTP....."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Просмотр лога"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Проверка обновлений"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Загрузка обновлений"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Распаковка обновлений"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Замена файлов"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Соединения с базой данных закрыты"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Остановка сервера"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Обновления установлены, нажмите ок и перезагрузите страницу"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Ошибка обновления:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "Ошибка HTTP"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Ошибка соединения"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Тайм-аут при установлении соединения"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Общая ошибка"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "Не удалось сохранить файл обновления во временной папке."
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "Не удалось создать хотя бы одного пользователя LDAP"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "Ошибка: %(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "Ошибка: ни одного пользователя не найдено в ответ на запрос сервер LDAP"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "По крайней мере, один пользователь LDAP не найден в базе данных"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/sv/LC_MESSAGES/messages.mo b/cps/translations/sv/LC_MESSAGES/messages.mo
index 1b1ae265..b51dcc5f 100644
Binary files a/cps/translations/sv/LC_MESSAGES/messages.mo and b/cps/translations/sv/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/sv/LC_MESSAGES/messages.po b/cps/translations/sv/LC_MESSAGES/messages.po
index 48153944..307c4c09 100644
--- a/cps/translations/sv/LC_MESSAGES/messages.po
+++ b/cps/translations/sv/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-03-14 09:30+0100\n"
 "Last-Translator: Jonatan Nyberg <jonatan.nyberg.karl@gmail.com>\n"
 "Language: sv\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,48 +30,48 @@ msgstr "inte installerad"
 msgid "Statistics"
 msgstr "Statistik"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Server startas om, vänligen uppdatera sidan"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Stänger servern, vänligen stäng fönstret"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Okänd"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Administrationssida"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Användargränssnitt konfiguration"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Adminstratör användare"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Alla"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -84,315 +84,351 @@ msgstr ""
 msgid "Show All"
 msgstr "Visa alla"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web konfiguration uppdaterad"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "Vill du verkligen ta bort Kobo-token?"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Är du säker på att du vill ta bort hyllan?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Är du säker på att du vill ta bort hyllan?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Är du säker på att du vill ta bort hyllan?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr "Förneka"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr "Tillåt"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Grundläggande konfiguration"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Fyll i alla fält!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-posten är inte från giltig domän"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Lägg till ny användare"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Användaren '%(user)s' skapad"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Hittade ett befintligt konto för den här e-postadressen eller smeknamnet."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Användaren '%(nick)s' borttagen"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Ingen adminstratörsanvändare kvar, kan inte ta bort användaren"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Redigera användaren %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Användaren '%(nick)s' uppdaterad"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Ett okänt fel uppstod."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Ändra SMTP-inställningar"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Det gick inte att skicka Testmeddelandet: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Vänligen konfigurera din e-postadress först..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "E-postserverinställningar uppdaterade"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "Lösenord för användaren %(user)s återställd"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Ett okänt fel uppstod. Försök igen senare."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Konfigurera SMTP-postinställningarna först..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Visaren för loggfil"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Begär uppdateringspaketet"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Hämtar uppdateringspaketet"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Packar upp uppdateringspaketet"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Ersätta filer"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Databasanslutningarna är stängda"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Stoppar server"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Uppdatering klar, tryck på okej och uppdatera sidan"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Uppdateringen misslyckades:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP-fel"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Anslutningsfel"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Tiden ute när du etablerade anslutning"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Allmänt fel"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/tr/LC_MESSAGES/messages.mo b/cps/translations/tr/LC_MESSAGES/messages.mo
index 0a78a67d..5cb10f11 100644
Binary files a/cps/translations/tr/LC_MESSAGES/messages.mo and b/cps/translations/tr/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/tr/LC_MESSAGES/messages.po b/cps/translations/tr/LC_MESSAGES/messages.po
index e409c61d..1bd45534 100644
--- a/cps/translations/tr/LC_MESSAGES/messages.po
+++ b/cps/translations/tr/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-04-23 22:47+0300\n"
 "Last-Translator: iz <iz7iz7iz@protonmail.ch>\n"
 "Language: tr\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,47 +30,47 @@ msgstr "yüklü değil"
 msgid "Statistics"
 msgstr "İstatistikler"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Sunucu yeniden başlatıldı, lütfen sayfayı yeniden yükleyin"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Sunucu kapatıyor, lütfen pencereyi kapatın"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Bilinmeyen"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Yönetim sayfası"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Arayüz Ayarları"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 msgid "Edit Users"
 msgstr ""
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "Tümü"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -83,313 +83,349 @@ msgstr ""
 msgid "Show All"
 msgstr ""
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web yapılandırması güncellendi"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr ""
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Temel Ayarlar"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Lütfen tüm alanları doldurun!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "E-posta izin verilen bir servisten değil"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Yeni kullanıcı ekle"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "'%(user)s' kullanıcısı oluşturuldu"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "Bu e-posta adresi veya kullanıcı adı için zaten bir hesap var."
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Kullanıcı '%(nick)s' silindi"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "Başka yönetici kullanıcı olmadığından silinemedi"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "%(nick)s kullanıcısını düzenle"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "'%(nick)s' kullanıcısı güncellendi"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Bilinmeyen bir hata oluştu."
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr ""
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "Deneme e-postası gönderilirken bir hata oluştu: %(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "Lütfen önce e-posta adresinizi ayarlayın..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "E-posta sunucusu ayarları güncellendi"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "%(user)s kullanıcısının şifresi sıfırlandı"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "Bilinmeyen bir hata oluştu. Lütfen daha sonra tekrar deneyiniz."
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Lütfen önce SMTP e-posta ayarlarını ayarlayın..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "Log dosyası görüntüleyici"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Güncelleme paketi isteniyor"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Güncelleme paketi indiriliyor"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Güncelleme paketi ayıklanıyor"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "Dosyalar değiştiriliyor"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "Veritabanı bağlantıları kapalı"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "Sunucu durduruyor"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Güncelleme tamamlandı, sayfayı yenilemek için lütfen Tamam'a tıklayınız"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "Güncelleme başarısız:"
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP Hatası"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "Bağlantı hatası"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "Bağlantı kurulmaya çalışırken zaman aşımına uğradı"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "Genel hata"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/uk/LC_MESSAGES/messages.mo b/cps/translations/uk/LC_MESSAGES/messages.mo
index 75ad8223..cc239d65 100644
Binary files a/cps/translations/uk/LC_MESSAGES/messages.mo and b/cps/translations/uk/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/uk/LC_MESSAGES/messages.po b/cps/translations/uk/LC_MESSAGES/messages.po
index a9de12ff..f1473f61 100644
--- a/cps/translations/uk/LC_MESSAGES/messages.po
+++ b/cps/translations/uk/LC_MESSAGES/messages.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/calibre-web\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2017-04-30 00:47+0300\n"
 "Last-Translator: ABIS Team <biblio.if.abis@gmail.com>\n"
 "Language: uk\n"
@@ -15,7 +15,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -29,47 +29,47 @@ msgstr "не встановлено"
 msgid "Statistics"
 msgstr "Статистика"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "Сервер перезавантажено, будь-ласка, перезавантажте сторінку"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "Виконується зупинка серверу, будь-ласка, закрийте вікно"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "Невідомий"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "Сторінка адміністратора"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "Конфігурація інтерфейсу"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "Керування сервером"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr ""
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -82,314 +82,350 @@ msgstr ""
 msgid "Show All"
 msgstr "Показати всі"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr ""
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "Ви справді хочете видалити книжкову полицю?"
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 #, fuzzy
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr "Ви справді хочете видалити книжкову полицю?"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 #, fuzzy
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr "Ви справді хочете видалити книжкову полицю?"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "Настройки сервера"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "Будь-ласка, заповніть всі поля!"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr ""
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "Додати користувача"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "Користувач '%(user)s' додан"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 msgid "Found an existing account for this e-mail address or name."
 msgstr ""
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "Користувача '%(nick)s' видалено"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr ""
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "Змінити користувача %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "Користувача '%(nick)s' оновлено"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "Сталась невідома помилка"
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "Змінити налаштування SMTP"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr ""
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr ""
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr ""
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr ""
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "Будь-ласка, спочатку сконфігуруйте параметри SMTP"
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr ""
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "Перевірка оновлень"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "Завантаження оновлень"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "Розпакування оновлення"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr ""
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "З'єднання з базою даних закрите"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr ""
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "Оновлення встановлені, натисніть ok і перезавантажте сторінку"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr ""
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr ""
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr ""
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr ""
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr ""
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""
 
diff --git a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo
index 4b3b46fc..43468ca1 100644
Binary files a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo and b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
index 4a430b0e..50fc7324 100644
--- a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
+++ b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: 2020-09-27 22:18+0800\n"
 "Last-Translator: dalin <dalin.lin@gmail.com>\n"
 "Language: zh_CN\n"
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -30,371 +30,405 @@ msgstr "未安装"
 msgid "Statistics"
 msgstr "统计"
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr "服务器已重启，请刷新页面"
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr "正在关闭服务器，请关闭窗口"
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr "重新连接成功"
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr "未知命令"
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr "未知"
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr "管理页"
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr "界面配置"
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 #, fuzzy
 msgid "Edit Users"
 msgstr "管理员用户"
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 #, fuzzy
 msgid "all"
 msgstr "全部"
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr "找不到用户"
 
 #: cps/admin.py:329
 msgid "{} users deleted successfully"
-msgstr ""
+msgstr "成功删除 {} 个用户"
 
 #: cps/admin.py:351 cps/templates/user_edit.html:44
 #: cps/templates/user_table.html:69
 msgid "Show All"
 msgstr "显示全部"
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr "访客名称无法更改"
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
-msgstr ""
+msgstr "游客无法拥有此角色"
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr "理员账户不存在，无法删除管理员角色"
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
+msgstr "游客无法拥有此视图"
+
+#: cps/admin.py:432
+msgid "Invalid view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
+msgstr "游客的本地化是自动侦测而无法设置的"
+
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr "Calibre-Web配置已更新"
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr "您确定删除Kobo Token吗？"
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
-msgstr ""
+msgstr "您确定要删除此域吗？"
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
-msgstr ""
+msgstr "您确定要删除此用户吗？"
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr "您确定要删除此书架吗？"
 
-#: cps/admin.py:497
-#, fuzzy
+#: cps/admin.py:526
 msgid "Are you sure you want to change locales of selected user(s)?"
-msgstr "您确定要删除此书架吗？"
+msgstr "您确定要修改选定用户的本地化设置吗？"
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
-msgstr ""
+msgstr "您确定要修改选定用户的可见书籍语言吗？"
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
-msgstr ""
+msgstr "您确定要修改选定用户的选定角色吗？"
 
-#: cps/admin.py:503
-#, fuzzy
+#: cps/admin.py:532
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
-msgstr "您确定要删除此书架吗？"
+msgstr "您确定要修改选定用户的选定限制吗？"
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
+msgstr "您确定要修改选定用户的选定可视化限制吗？"
+
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
-msgstr "隐藏"
+msgstr "拒绝"
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
-msgstr "显示"
+msgstr "允许"
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr "client_secrets.json 未为 Web 应用程序配置"
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "日志文件路径无效，请输入正确的路径"
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr "访问日志路径无效，请输入正确的路径"
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr "请输入LDAP主机、端口、DN和用户对象标识符"
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP组对象过滤器需要一个具有“%s”格式标识符"
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP组对象过滤器的括号不匹配"
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr "LDAP用户对象过滤器需要一个具有“%s”格式标识符"
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr "LDAP用户对象过滤器的括号不匹配"
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr "密钥文件路径无效，请输入正确的路径"
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr "证书文件路径无效，请输入正确的路径"
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr "设置数据库不可写入"
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr "数据库路径无效，请输入正确的路径"
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr "数据库不可写入"
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr "基本配置"
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr "请填写所有字段！"
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr "邮箱不在有效域中"
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr "添加新用户"
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr "用户“%(user)s”已创建"
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 #, fuzzy
 msgid "Found an existing account for this e-mail address or name."
 msgstr "此邮箱或用户名的账号已经存在。"
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr "用户“%(nick)s”已删除"
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
-msgstr ""
+msgstr "无法删除游客用户"
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr "管理员账户不存在，无法删除用户"
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr "编辑用户 %(nick)s"
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr "用户“%(nick)s”已更新"
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 #, fuzzy
 msgid "An unknown error occurred."
 msgstr "发生未知错误。"
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr "编辑邮件服务器设置"
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
-msgstr ""
+msgstr "G-Mail账号校验成功"
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr "发送测试邮件时出错：%(res)s"
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr "请先配置您的邮箱地址..."
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr "邮件服务器设置已更新"
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr "用户 %(user)s 的密码已重置"
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr "发生一个未知错误，请稍后再试。"
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr "请先配置SMTP邮箱设置..."
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr "日志文件查看器"
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr "正在请求更新包"
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr "正在下载更新包"
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr "正在解压更新包"
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr "正在替换文件"
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr "数据库连接已关闭"
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr "正在停止服务器"
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr "更新完成，请点击确定并刷新页面"
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr "更新失败："
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr "HTTP错误"
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr "连接错误"
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr "建立连接超时"
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr "一般错误"
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr "更新文件无法保存在临时目录中"
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr "创建至少一个LDAP用户失败"
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr "错误：%(ldaperror)s"
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr "错误：在LDAP服务器的响应中没有返回用户"
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr "数据库中没有找到至少一个LDAP用户"
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
-msgstr ""
+msgstr "{} 用户被成功导入"
 
 #: cps/converter.py:31
 msgid "not configured"
@@ -614,7 +648,7 @@ msgstr "此用户名已被使用"
 
 #: cps/helper.py:529
 msgid "Invalid e-mail address format"
-msgstr ""
+msgstr "无效的邮件地址格式"
 
 #: cps/helper.py:602
 msgid "Error Downloading Cover"
@@ -634,7 +668,7 @@ msgstr "封面文件不是有效的图片文件，或者无法存储"
 
 #: cps/helper.py:642
 msgid "Only jpg/jpeg/png/webp/bmp files are supported as coverfile"
-msgstr ""
+msgstr "封面文件只支持jpg/jpeg/png/webp/bmp文件"
 
 #: cps/helper.py:655
 msgid "Only jpg/jpeg files are supported as coverfile"
@@ -732,7 +766,7 @@ msgstr "GitHub Oauth 错误，请重试。"
 
 #: cps/oauth_bb.py:336
 msgid "GitHub Oauth error: {}"
-msgstr ""
+msgstr "GitHub Oauth 错误: {}"
 
 #: cps/oauth_bb.py:357
 msgid "Google Oauth error, please retry later."
@@ -740,7 +774,7 @@ msgstr "Google Oauth 错误，请重试。"
 
 #: cps/oauth_bb.py:360
 msgid "Google Oauth error: {}"
-msgstr ""
+msgstr "Google Oauth 错误: {}"
 
 #: cps/opds.py:110 cps/opds.py:199 cps/opds.py:276 cps/opds.py:328
 #: cps/templates/grid.html:14 cps/templates/list.html:14
@@ -749,7 +783,7 @@ msgstr "全部"
 
 #: cps/opds.py:385
 msgid "{} Stars"
-msgstr ""
+msgstr "{} 星"
 
 #: cps/remotelogin.py:65 cps/web.py:1522
 msgid "login"
@@ -1418,7 +1452,7 @@ msgstr "管理"
 
 #: cps/templates/admin.html:160
 msgid "Download Debug Package"
-msgstr ""
+msgstr "下载Debug包"
 
 #: cps/templates/admin.html:161
 msgid "View Logs"
@@ -2051,7 +2085,7 @@ msgstr "LDAP组成员字段"
 
 #: cps/templates/config_edit.html:342
 msgid "LDAP Member User Filter Detection"
-msgstr ""
+msgstr "LDAP成员用户过滤器探测"
 
 #: cps/templates/config_edit.html:344
 msgid "Autodetect"
@@ -2059,11 +2093,11 @@ msgstr "自动检测"
 
 #: cps/templates/config_edit.html:345
 msgid "Custom Filter"
-msgstr ""
+msgstr "自定义过滤器"
 
 #: cps/templates/config_edit.html:350
 msgid "LDAP Member User Filter"
-msgstr ""
+msgstr "LDAP成员用户过滤器"
 
 #: cps/templates/config_edit.html:361
 #, python-format
@@ -2262,11 +2296,11 @@ msgstr "编辑元数据"
 
 #: cps/templates/email_edit.html:12
 msgid "Choose Server Type"
-msgstr ""
+msgstr "选择服务器类型"
 
 #: cps/templates/email_edit.html:14
 msgid "Use Standard E-Mail Account"
-msgstr ""
+msgstr "使用标准电子邮件账号"
 
 #: cps/templates/email_edit.html:15
 msgid "Gmail Account with OAuth2 Verfification"
@@ -2576,27 +2610,27 @@ msgstr "必须先将书籍存档并同步设备，然后才能安全地删除书
 
 #: cps/templates/modal_dialogs.html:76
 msgid "Choose File Location"
-msgstr ""
+msgstr "选择文件位置"
 
 #: cps/templates/modal_dialogs.html:82
 msgid "type"
-msgstr ""
+msgstr "类型"
 
 #: cps/templates/modal_dialogs.html:83
 msgid "name"
-msgstr ""
+msgstr "名称"
 
 #: cps/templates/modal_dialogs.html:84
 msgid "size"
-msgstr ""
+msgstr "大小"
 
 #: cps/templates/modal_dialogs.html:90
 msgid "Parent Directory"
-msgstr ""
+msgstr "父目录"
 
 #: cps/templates/modal_dialogs.html:98
 msgid "Select"
-msgstr ""
+msgstr "选择"
 
 #: cps/templates/modal_dialogs.html:134
 #, fuzzy
@@ -2765,7 +2799,7 @@ msgstr "出版日期到"
 
 #: cps/templates/search_form.html:35
 msgid "Read Status"
-msgstr ""
+msgstr "阅读状态"
 
 #: cps/templates/search_form.html:52
 msgid "Exclude Tags"
@@ -2776,9 +2810,8 @@ msgid "Exclude Series"
 msgstr "排除丛书"
 
 #: cps/templates/search_form.html:88
-#, fuzzy
 msgid "Exclude Shelves"
-msgstr "排除丛书"
+msgstr "排除书架"
 
 #: cps/templates/search_form.html:108
 msgid "Exclude Languages"
@@ -2806,7 +2839,7 @@ msgstr "删除此书架"
 
 #: cps/templates/shelf.html:11
 msgid "Edit Shelf Properties"
-msgstr ""
+msgstr "编辑书架属性"
 
 #: cps/templates/shelf.html:13
 msgid "Arrange books manually"
@@ -2858,7 +2891,7 @@ msgstr "套丛书在此书库中"
 
 #: cps/templates/stats.html:29
 msgid "System Statistics"
-msgstr ""
+msgstr "系统统计"
 
 #: cps/templates/stats.html:33
 msgid "Program Library"
@@ -2942,59 +2975,51 @@ msgstr "生成Kobo Auth 地址"
 
 #: cps/templates/user_table.html:68 cps/templates/user_table.html:91
 msgid "Select..."
-msgstr ""
+msgstr "选择..."
 
 #: cps/templates/user_table.html:118
-#, fuzzy
 msgid "Edit User"
-msgstr "管理员用户"
+msgstr "编辑用户"
 
 #: cps/templates/user_table.html:121
-#, fuzzy
 msgid "Enter Username"
-msgstr "选择一个用户名"
+msgstr "输入用户名"
 
 #: cps/templates/user_table.html:122
-#, fuzzy
 msgid "Enter E-mail Address"
-msgstr "您的邮箱地址"
+msgstr "输入邮箱地址"
 
 #: cps/templates/user_table.html:123
-#, fuzzy
 msgid "Enter Kindle E-mail Address"
-msgstr "接收书籍的Kindle邮箱地址"
+msgstr "输入Kindle邮箱地址"
 
 #: cps/templates/user_table.html:123
-#, fuzzy
 msgid "Kindle E-mail"
-msgstr "测试邮件"
+msgstr "Kindle邮箱"
 
 #: cps/templates/user_table.html:124
-#, fuzzy
 msgid "Locale"
-msgstr "缩放"
+msgstr "本地化"
 
 #: cps/templates/user_table.html:125
 msgid "Visible Book Languages"
 msgstr ""
 
 #: cps/templates/user_table.html:126
-#, fuzzy
 msgid "Edit Denied Tags"
-msgstr "选择标签值显示或隐藏书籍"
+msgstr "编辑拒绝标签"
 
 #: cps/templates/user_table.html:126
 msgid "Denied Tags"
-msgstr ""
+msgstr "拒绝标签"
 
 #: cps/templates/user_table.html:127
-#, fuzzy
 msgid "Edit Allowed Tags"
-msgstr "选择标签值显示或隐藏书籍"
+msgstr "编辑允许标签"
 
 #: cps/templates/user_table.html:127
 msgid "Allowed Tags"
-msgstr ""
+msgstr "允许标签"
 
 #: cps/templates/user_table.html:128
 #, fuzzy
@@ -3017,21 +3042,18 @@ msgid "Denied Columns Values"
 msgstr "添加显示或隐藏书籍的自定义栏目值"
 
 #: cps/templates/user_table.html:131
-#, fuzzy
 msgid "Change Password"
-msgstr "允许修改密码"
+msgstr "修改密码"
 
 #: cps/templates/user_table.html:134
 msgid "View"
 msgstr ""
 
 #: cps/templates/user_table.html:137
-#, fuzzy
 msgid "Edit Public Shelfs"
-msgstr "公共书架"
+msgstr "编辑公共书架"
 
 #: cps/templates/user_table.html:140
-#, fuzzy
 msgid "Show read/unread selection"
-msgstr "显示丛书选择"
+msgstr "显示已读/未读选择"
 
diff --git a/messages.pot b/messages.pot
index ac849f8f..284462a2 100644
--- a/messages.pot
+++ b/messages.pot
@@ -8,14 +8,14 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-04-26 19:04+0200\n"
+"POT-Creation-Date: 2021-05-01 16:33+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.9.0\n"
+"Generated-By: Babel 2.8.0\n"
 
 #: cps/about.py:43
 msgid "installed"
@@ -29,46 +29,46 @@ msgstr ""
 msgid "Statistics"
 msgstr ""
 
-#: cps/admin.py:152
+#: cps/admin.py:151
 msgid "Server restarted, please reload page"
 msgstr ""
 
-#: cps/admin.py:154
+#: cps/admin.py:153
 msgid "Performing shutdown of server, please close window"
 msgstr ""
 
-#: cps/admin.py:162
+#: cps/admin.py:161
 msgid "Reconnect successful"
 msgstr ""
 
-#: cps/admin.py:165
+#: cps/admin.py:164
 msgid "Unknown command"
 msgstr ""
 
-#: cps/admin.py:175 cps/editbooks.py:668 cps/editbooks.py:682
+#: cps/admin.py:174 cps/editbooks.py:668 cps/editbooks.py:682
 #: cps/editbooks.py:821 cps/editbooks.py:823 cps/editbooks.py:850
 #: cps/editbooks.py:866 cps/updater.py:555 cps/uploader.py:94
 #: cps/uploader.py:104
 msgid "Unknown"
 msgstr ""
 
-#: cps/admin.py:196
+#: cps/admin.py:195
 msgid "Admin page"
 msgstr ""
 
-#: cps/admin.py:218
+#: cps/admin.py:217
 msgid "UI Configuration"
 msgstr ""
 
-#: cps/admin.py:250 cps/templates/admin.html:46
+#: cps/admin.py:249 cps/templates/admin.html:46
 msgid "Edit Users"
 msgstr ""
 
-#: cps/admin.py:291
+#: cps/admin.py:290
 msgid "all"
 msgstr ""
 
-#: cps/admin.py:315 cps/admin.py:1451
+#: cps/admin.py:315 cps/admin.py:1486
 msgid "User not found"
 msgstr ""
 
@@ -81,311 +81,347 @@ msgstr ""
 msgid "Show All"
 msgstr ""
 
-#: cps/admin.py:390 cps/admin.py:1333
+#: cps/admin.py:372 cps/admin.py:378
+msgid "Malformed request"
+msgstr ""
+
+#: cps/admin.py:390 cps/admin.py:1368
 msgid "Guest Name can't be changed"
 msgstr ""
 
-#: cps/admin.py:399
+#: cps/admin.py:400
 msgid "Guest can't have this role"
 msgstr ""
 
-#: cps/admin.py:408 cps/admin.py:1298
+#: cps/admin.py:412 cps/admin.py:1333
 msgid "No admin user remaining, can't remove admin role"
 msgstr ""
 
-#: cps/admin.py:413
+#: cps/admin.py:416 cps/admin.py:430
+msgid "Value has to be true or false"
+msgstr ""
+
+#: cps/admin.py:418
+msgid "Invalid role"
+msgstr ""
+
+#: cps/admin.py:422
 msgid "Guest can't have this view"
 msgstr ""
 
-#: cps/admin.py:420
+#: cps/admin.py:432
+msgid "Invalid view"
+msgstr ""
+
+#: cps/admin.py:435
 msgid "Guest's Locale is determined automatically and can't be set"
 msgstr ""
 
-#: cps/admin.py:477 cps/admin.py:1183
+#: cps/admin.py:439
+msgid "No Valid Locale Given"
+msgstr ""
+
+#: cps/admin.py:450
+msgid "No Valid Book Language Given"
+msgstr ""
+
+#: cps/admin.py:452
+msgid "Parameter not found"
+msgstr ""
+
+#: cps/admin.py:506 cps/admin.py:1219
 msgid "Calibre-Web configuration updated"
 msgstr ""
 
-#: cps/admin.py:489
+#: cps/admin.py:518
 msgid "Do you really want to delete the Kobo Token?"
 msgstr ""
 
-#: cps/admin.py:491
+#: cps/admin.py:520
 msgid "Do you really want to delete this domain?"
 msgstr ""
 
-#: cps/admin.py:493
+#: cps/admin.py:522
 msgid "Do you really want to delete this user?"
 msgstr ""
 
-#: cps/admin.py:495 cps/templates/shelf.html:90
+#: cps/admin.py:524 cps/templates/shelf.html:90
 msgid "Are you sure you want to delete this shelf?"
 msgstr ""
 
-#: cps/admin.py:497
+#: cps/admin.py:526
 msgid "Are you sure you want to change locales of selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:499
+#: cps/admin.py:528
 msgid "Are you sure you want to change visible book languages for selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:501
+#: cps/admin.py:530
 msgid "Are you sure you want to change the selected role for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:503
+#: cps/admin.py:532
 msgid "Are you sure you want to change the selected restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:505
+#: cps/admin.py:534
 msgid "Are you sure you want to change the selected visibility restrictions for the selected user(s)?"
 msgstr ""
 
-#: cps/admin.py:767 cps/admin.py:773 cps/admin.py:783 cps/admin.py:793
+#: cps/admin.py:683
+msgid "Tag not found"
+msgstr ""
+
+#: cps/admin.py:695
+msgid "Invalid Action"
+msgstr ""
+
+#: cps/admin.py:800 cps/admin.py:806 cps/admin.py:816 cps/admin.py:826
 #: cps/templates/modal_dialogs.html:29 cps/templates/user_table.html:43
 msgid "Deny"
 msgstr ""
 
-#: cps/admin.py:769 cps/admin.py:775 cps/admin.py:785 cps/admin.py:795
+#: cps/admin.py:802 cps/admin.py:808 cps/admin.py:818 cps/admin.py:828
 #: cps/templates/modal_dialogs.html:28 cps/templates/user_table.html:48
 msgid "Allow"
 msgstr ""
 
-#: cps/admin.py:938
+#: cps/admin.py:971
 msgid "client_secrets.json Is Not Configured For Web Application"
 msgstr ""
 
-#: cps/admin.py:980
+#: cps/admin.py:1016
 msgid "Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:986
+#: cps/admin.py:1022
 msgid "Access Logfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1016
+#: cps/admin.py:1052
 msgid "Please Enter a LDAP Provider, Port, DN and User Object Identifier"
 msgstr ""
 
-#: cps/admin.py:1031
+#: cps/admin.py:1067
 #, python-format
 msgid "LDAP Group Object Filter Needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1034
+#: cps/admin.py:1070
 msgid "LDAP Group Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1039
+#: cps/admin.py:1075
 #, python-format
 msgid "LDAP User Object Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1042
+#: cps/admin.py:1078
 msgid "LDAP User Object Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1050
+#: cps/admin.py:1086
 #, python-format
 msgid "LDAP Member User Filter needs to Have One \"%s\" Format Identifier"
 msgstr ""
 
-#: cps/admin.py:1053
+#: cps/admin.py:1089
 msgid "LDAP Member User Filter Has Unmatched Parenthesis"
 msgstr ""
 
-#: cps/admin.py:1061
+#: cps/admin.py:1097
 msgid "LDAP CACertificate, Certificate or Key Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1087
+#: cps/admin.py:1123
 msgid "Keyfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1093
+#: cps/admin.py:1129
 msgid "Certfile Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1164 cps/admin.py:1268 cps/admin.py:1360 cps/admin.py:1426
+#: cps/admin.py:1200 cps/admin.py:1303 cps/admin.py:1395 cps/admin.py:1461
 #: cps/shelf.py:103 cps/shelf.py:163 cps/shelf.py:206 cps/shelf.py:269
 #: cps/shelf.py:325 cps/shelf.py:360 cps/shelf.py:431
 msgid "Settings DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1176
+#: cps/admin.py:1212
 msgid "DB Location is not Valid, Please Enter Correct Path"
 msgstr ""
 
-#: cps/admin.py:1180
+#: cps/admin.py:1216
 msgid "DB is not Writeable"
 msgstr ""
 
-#: cps/admin.py:1221
+#: cps/admin.py:1256
 msgid "Basic Configuration"
 msgstr ""
 
-#: cps/admin.py:1237 cps/web.py:1417
+#: cps/admin.py:1272 cps/web.py:1417
 msgid "Please fill out all fields!"
 msgstr ""
 
-#: cps/admin.py:1245
+#: cps/admin.py:1280
 msgid "E-mail is not from valid domain"
 msgstr ""
 
-#: cps/admin.py:1249 cps/admin.py:1379
+#: cps/admin.py:1284 cps/admin.py:1414
 msgid "Add new user"
 msgstr ""
 
-#: cps/admin.py:1258
+#: cps/admin.py:1293
 #, python-format
 msgid "User '%(user)s' created"
 msgstr ""
 
-#: cps/admin.py:1264
+#: cps/admin.py:1299
 msgid "Found an existing account for this e-mail address or name."
 msgstr ""
 
-#: cps/admin.py:1277
+#: cps/admin.py:1312
 #, python-format
 msgid "User '%(nick)s' deleted"
 msgstr ""
 
-#: cps/admin.py:1279 cps/admin.py:1280
+#: cps/admin.py:1314 cps/admin.py:1315
 msgid "Can't delete Guest User"
 msgstr ""
 
-#: cps/admin.py:1283
+#: cps/admin.py:1318
 msgid "No admin user remaining, can't delete user"
 msgstr ""
 
-#: cps/admin.py:1348 cps/admin.py:1469
+#: cps/admin.py:1383 cps/admin.py:1504
 #, python-format
 msgid "Edit User %(nick)s"
 msgstr ""
 
-#: cps/admin.py:1352
+#: cps/admin.py:1387
 #, python-format
 msgid "User '%(nick)s' updated"
 msgstr ""
 
-#: cps/admin.py:1356
+#: cps/admin.py:1391
 msgid "An unknown error occurred."
 msgstr ""
 
-#: cps/admin.py:1388 cps/templates/admin.html:94
+#: cps/admin.py:1423 cps/templates/admin.html:94
 msgid "Edit E-mail Server Settings"
 msgstr ""
 
-#: cps/admin.py:1407
+#: cps/admin.py:1442
 msgid "G-Mail Account Verification Successful"
 msgstr ""
 
-#: cps/admin.py:1433
+#: cps/admin.py:1468
 #, python-format
 msgid "Test e-mail queued for sending to %(email)s, please check Tasks for result"
 msgstr ""
 
-#: cps/admin.py:1436
+#: cps/admin.py:1471
 #, python-format
 msgid "There was an error sending the Test e-mail: %(res)s"
 msgstr ""
 
-#: cps/admin.py:1438
+#: cps/admin.py:1473
 msgid "Please configure your e-mail address first..."
 msgstr ""
 
-#: cps/admin.py:1440
+#: cps/admin.py:1475
 msgid "E-mail server settings updated"
 msgstr ""
 
-#: cps/admin.py:1481
+#: cps/admin.py:1516
 #, python-format
 msgid "Password for user %(user)s reset"
 msgstr ""
 
-#: cps/admin.py:1484 cps/web.py:1442 cps/web.py:1503
+#: cps/admin.py:1519 cps/web.py:1442 cps/web.py:1503
 msgid "An unknown error occurred. Please try again later."
 msgstr ""
 
-#: cps/admin.py:1487 cps/web.py:1382
+#: cps/admin.py:1522 cps/web.py:1382
 msgid "Please configure the SMTP mail settings first..."
 msgstr ""
 
-#: cps/admin.py:1498
+#: cps/admin.py:1533
 msgid "Logfile viewer"
 msgstr ""
 
-#: cps/admin.py:1564
+#: cps/admin.py:1599
 msgid "Requesting update package"
 msgstr ""
 
-#: cps/admin.py:1565
+#: cps/admin.py:1600
 msgid "Downloading update package"
 msgstr ""
 
-#: cps/admin.py:1566
+#: cps/admin.py:1601
 msgid "Unzipping update package"
 msgstr ""
 
-#: cps/admin.py:1567
+#: cps/admin.py:1602
 msgid "Replacing files"
 msgstr ""
 
-#: cps/admin.py:1568
+#: cps/admin.py:1603
 msgid "Database connections are closed"
 msgstr ""
 
-#: cps/admin.py:1569
+#: cps/admin.py:1604
 msgid "Stopping server"
 msgstr ""
 
-#: cps/admin.py:1570
+#: cps/admin.py:1605
 msgid "Update finished, please press okay and reload page"
 msgstr ""
 
-#: cps/admin.py:1571 cps/admin.py:1572 cps/admin.py:1573 cps/admin.py:1574
-#: cps/admin.py:1575
+#: cps/admin.py:1606 cps/admin.py:1607 cps/admin.py:1608 cps/admin.py:1609
+#: cps/admin.py:1610
 msgid "Update failed:"
 msgstr ""
 
-#: cps/admin.py:1571 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
+#: cps/admin.py:1606 cps/updater.py:356 cps/updater.py:566 cps/updater.py:568
 msgid "HTTP Error"
 msgstr ""
 
-#: cps/admin.py:1572 cps/updater.py:358 cps/updater.py:570
+#: cps/admin.py:1607 cps/updater.py:358 cps/updater.py:570
 msgid "Connection error"
 msgstr ""
 
-#: cps/admin.py:1573 cps/updater.py:360 cps/updater.py:572
+#: cps/admin.py:1608 cps/updater.py:360 cps/updater.py:572
 msgid "Timeout while establishing connection"
 msgstr ""
 
-#: cps/admin.py:1574 cps/updater.py:362 cps/updater.py:574
+#: cps/admin.py:1609 cps/updater.py:362 cps/updater.py:574
 msgid "General error"
 msgstr ""
 
-#: cps/admin.py:1575
+#: cps/admin.py:1610
 msgid "Update File Could Not be Saved in Temp Dir"
 msgstr ""
 
-#: cps/admin.py:1636
+#: cps/admin.py:1671
 msgid "Failed to Create at Least One LDAP User"
 msgstr ""
 
-#: cps/admin.py:1649
+#: cps/admin.py:1684
 #, python-format
 msgid "Error: %(ldaperror)s"
 msgstr ""
 
-#: cps/admin.py:1653
+#: cps/admin.py:1688
 msgid "Error: No user returned in response of LDAP server"
 msgstr ""
 
-#: cps/admin.py:1686
+#: cps/admin.py:1721
 msgid "At Least One LDAP User Not Found in Database"
 msgstr ""
 
-#: cps/admin.py:1688
+#: cps/admin.py:1723
 msgid "{} User Successfully Imported"
 msgstr ""