Large album art for NowPlayingActivity.
Updated to use full album art.
Integrates Singles fragment.
Updated TAG name.
Removed some commented out code.
Removed unused references.
Fixed big error where in some cases, the wrong albums would load for a given artist. Also it properly handles a lack of album art.
Updated to DEFAULT_SORT_ORDER.
NowPlayingActivity uses the full album art.
Prompts the user to rate the app after launching five times. Also, shows the navigation drawer open on first launch.