delete episode files on feed delete

store position of playback when epsiode action changes come in
ActionState added

added the Action state to episodes, written tests
PodderService: Generalize gpo.net authentication.

No external API changes. (Some IPC API changes.)
d.gpodder.responders: Organize imports.
PodderService: Use correct callback in downloadPodcastList.
d.gpodder: Enable callback caching.
Update mygpoclient-java JAR.

Note that this will require a few (pending) fixes to existing code.
Update exception handling when using mygpoclient-java.

Authentication failures are now correctly encapsulated.
Silence the default locale lint warning

Warnings such as these are distracting and prevent us from seeing real
problems.
Scroll to top of list on selecting a new podcast
Add an empty AddPodcastActivity

This activity will be used to search for new podcasts,
add new podcasts by URL, and browse toplist podcasts.
Clean up files on save
Add SackOfViewsAdapter and MergeAdapter

These make creation of complicated lists simple.
Begin filling the add podcasts result list

Right now, it consists of two section headers, and dummy popular
podcasts.
Dummy click handlers
Ensure proper long line handling
Fix or suppress all remaining warnings

Conflicts:
	detlef/src/at/ac/tuwien/detlef/domain/EnhancedSubscriptionChanges.java
	test-detlef/src/at/ac/tuwien/detlef/gpodder/PodderServiceTest.java
Refactor episode persistence methods
swipe left on back button pressed

if on podcast tab - leave application
tests added for back button press