* Revamped most actions that require an internet connection to a new/fixed backend that allows forwarding the initial action and running it automatically once connected. (i.e., it'll allow you to set "Action when Wi-Fi is off" to "turn_on", and whatch stuff connect and do what you wanted automatically without having to re-click anywhere instead of showing you a Wi-Fi prompt and then not doing anything without any other feedback).
* Speaking of, fixed the "turn_on" beforeWifi action to, well, actually work. It's no longer marked as experimental.
* Consistently use "Wi-Fi" everywhere.
* On Kobo/Cervantes/Sony, implemented a "Kill Wi-Fi connection when inactive" system that will automatically disconnect from Wi-Fi after sustained *network* inactivity (i.e., you can keep reading, it'll eventually turn off on its own). This should be smart and flexible enough not to murder Wi-Fi while you need it, while still not keeping it uselessly on and murdering your battery.
(i.e., enable that + turn Wi-Fi on when off and enjoy never having to bother about Wi-Fi ever again).
* Made sending `NetworkConnected` / `NetworkDisconnected` events consistent (they were only being sent... sometimes, which made relying on 'em somewhat problematic).
* restoreWifiAsync is now only run when really needed (i.e., we no longer stomp on an existing working connection just for the hell of it).
* We no longer attempt to kill a bogus non-existent Wi-Fi connection when going to suspend, we only do it when it's actually needed.
* Every method of enabling Wi-Fi will now properly tear down Wi-Fi on failure, instead of leaving it in an undefined state.
* Fixed an issue in the fancy crash screen on Kobo/reMarkable that could sometime lead to the log excerpt being missing.
* Worked-around a number of sneaky issues related to low-level Wi-Fi/DHCP/DNS handling on Kobo (see the lengthy comments [below](https://github.com/koreader/koreader/pull/6424#issuecomment-663881059) for details). Fix#6421
Incidentally, this should also fix the inconsistencies experienced re: Wi-Fi behavior in Nickel when toggling between KOReader and Nickel (use NM/KFMon, and run a current FW for best results).
* For developers, this involves various cleanups around NetworkMgr and NetworkListener. Documentation is in-line, above the concerned functions.
* generic Device:info() function which returns the model
* add Device:canSuspend() and make it true in all devices that have suspend routines and the emulator
* also enable fake poweroff/reboot on the emulator
* add Device.home_dir
* add Device:hasExitOptions() and update menus & comments
Defines new function reconnectOrShowNetworkMenu(), which iterates over
available networks ordered by signal power, and check if we can connect
to saved SSIDs. If we can, then skip network list dialog.
* remove unused setting 'internal_storage_mount_point
use filemanagerutil.getDefaultDir() instead
https://github.com/koreader/koreader/blob/master/frontend/apps/filemanager/filemanagerutil.lua#L15
* more info about device frontlight/naturalLight capabilities
* make stock reader fonts available in KOReader
* remove restore-wifi-async leftovers
* wireless: fix wpa_supplicant configuration:
make it compatible w/ debian wheezy binaries
don't try to run enable-wifi.sh more than once
NiLuJe
Martín Fernández
Robert
Frans de Jonge
Sergey Avseyev
frio