Port all remaining handlers to event bus
Remove further unused files
Move all status codes to ErrorCode
Add convenience methods to start remaining jobs
TODO notes
Remove unused GPodderSync class
Update the TODO file
Minor refactoring: MainActivity.onActivityResult
Add Volksempfaenger's feed parser
Parse feeds locally
Parse episodes locally
Remove some listeners from DAOs

Removed all Podcast listeners and some Playlist listeners.
Also fixed a hard to find bug in CachingPodcastDAO.