Add rewind on resume

Makes the player rewind for a short bit if it has been paused for a long time or the episode has been changed.
This allows for the listener to recognize the point where playback was interrupted.
Fix gpodder icons color profile warning
Go to android plugin 0.14 and Gradle 2.1, this time for real

Fix service not loading issue due to wrong manifest merge, refer to service by its full class name