Updated version numbers in build.gradle

requires submodule update
Removed pull-to-refresh

Causes too much accidental updates
Improved menu behavior in all episodes view

fixes #451
Removed unused files
Added 'new' indicator to all episodes view + layout improvements
Added progress bar to queue items
Bugfix: Parser failures were not reported properly. fixes #450
Bugfix: Playback could not be restarted in some cases. fixes #387
Added test cases for starting playback