fix embeded css setting not persistent between launchings

frontend/apps/reader/modules/readercoptlistener.lua

@@ -4,12 +4,6 @@ local Event = require("ui/event")
 local ReaderCoptListener = EventListener:new{}
 
 function ReaderCoptListener:onReadSettings(config)
-    local embedded_css = config:readSetting("copt_embedded_css")
-    local toggle_embedded_css = embedded_css == 0 and false or true
-    table.insert(self.ui.postInitCallback, function()
-        self.ui:handleEvent(Event:new("ToggleEmbeddedStyleSheet", toggle_embedded_css))
-    end)
-    
     local view_mode = config:readSetting("copt_view_mode")
     if view_mode == 0 then
         table.insert(self.ui.postInitCallback, function()
@@ -20,7 +14,7 @@ function ReaderCoptListener:onReadSettings(config)
             self.ui:handleEvent(Event:new("SetViewMode", "scroll"))
         end)
     end
-    
+
     local status_line = config:readSetting("copt_status_line") or DCREREADER_PROGRESS_BAR
     self.document:setStatusLineProp(status_line)
 end

frontend/apps/reader/modules/readertypeset.lua

@@ -25,9 +25,10 @@ function ReaderTypeset:onReadSettings(config)
     end
 
     -- default to enable embedded css
-    self.embedded_css = config:readSetting("embedded_css") or true
+    self.embedded_css = config:readSetting("embedded_css")
+    if self.embedded_css == nil then self.embedded_css = true end
     self.ui.document:setEmbeddedStyleSheet(self.embedded_css and 1 or 0)
-    
+
     -- set page margins
     self:onSetPageMargins(config:readSetting("copt_page_margins") or DCREREADER_CONFIG_MARGIN_SIZES_MEDIUM)
 end