SimpleEpisodeDAO: Formatting and minor refactoring
IntentService prototype
Toplist proof of concept
Remove all previous toplist service code
Add greenrobot/eventbus

This seems to be a simpler way of achieving safe intra-application
communication.
Remove unused service methods
Port search and suggestions to event bus
Port auth check to event bus
Port device registration to event bus
Remove unused ParcelableByteArray
Remove the test suite

It's completely out of date by now. It *would* be a good idea to keep
this, but I simply don't want to maintain it.
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