Added documentation and cleaned up minor stuff in PlaybackActivity.
Added documentation and cleaned up minor stuff in PlaybackFragment.
Removed all unnecessary TomahawkAuth stuff for now.
Added documentation and cleaned up minor stuff in TomahawkService.
Removed com.codebutler.android_websockets library for now.
Renamed CollectionActivity to TomahawkMainActivity. Removed old redundant TomahawkMainActivity.
Added documentation/cleaned up TomahawkMainActivity.