Log Message:
Update to 68.2.1

Changelog:
    new
    A language for the user interface can now be chosen in the advanced settings \ 
(multilingual UI)

    fixed
    Problem with Google authentication (OAuth2)

    fixed
    Selected or unread messages not shown in the correct color in the thread \ 
pane (message list) under some circumstances

    fixed
    When using a language pack, names of standard folders weren't localized

    fixed
    Address book default startup directory in preferences panel not persisted

    fixed
    Various visual glitches: Conditions in filter editor not high enough, folder \ 
location widget not showing folder name, problem with menubar customization, \ 
add-on home page links accumulating, theme issues on Windows 7

    fixed
    Chat: Extended context menu on Instant messaging status dialog (Show Accounts)