Reader Fixes and Enhancements (#880)

* Don't show an exception when bookmarking doesn't have anything to change.

* Cleaned up the bookmark code a bit.

* Implemented fullscreen mode in the web reader. Refactored User Settings to move Password and 3rd Party Clients to a tab rather than accordion. Removed color filters for web reader.

* Implemented fullscreen mode into book reader

* Added some code for toggling fullscreen which re-renders the screen to ensure the fitting works optimially

* Fixed an issue where moving from FitToScreen -> Split (L/R) wouldn't render the screen correctly due to canvas not being reset.

* Fixed bad optimization and scaling when drawing fit to screen

* Removed left/right highlights on page direction change in favor for icons. Double arrow will dictate the page change.

* Reduced overlay auto close time to 3 seconds

* Updated the paginging direction overlay to use icons and colors. Added a blur effect on menus

* Removed debug flags

API/DTOs/UserPreferencesDto.cs

@@ -18,4 +18,4 @@ namespace API.DTOs
         public ReadingDirection BookReaderReadingDirection { get; set; }
         public bool SiteDarkMode { get; set; }
     }
-}
+}