This really shouldn't be enabled, as this database is not just a temp
one. Making the mistake of shipping the app without a proper migration
would cause a big problem.
Really hard to happen but an error is far better than data loss.
- Import subscriptions from YouTube and SoundCloud (all services that the extractor support)
- Import/export a JSON representation of the subscriptions
- [Minor] Remove some javax annotations in favor of the one provided by the android support library
-Added UI to create playlist from service player activity.
-Added state saving to playlist dialogs.
-Removed access to history activity on service player activity.
-Made StreamEntity serializable.
