Updated translations
Added workarounds for ActionMode/Option menu bugs
Fixed occasional NullPointerException in PlaybackController/ExternalPlayerFragment
Start playback immediately when skipping an episode and if continuous playback is enabled
"markFeedRead" and "markAllItemsRead" did not work correctly
Removed ActionBarSherlock from "about" page

Dependency is not used anymore
Merge branch 'release-0975' into develop