MusicPlayerFragment: fixed null pointer bug when getView() returns null

This was caused by getView() becoming null when the fragment is paused.
Don't pass tracks to MusicPlayerFragment to then add to boom box playlist. Add directly via on click then transition fragment
added SquareImageView to fix scaling issues in MusicPlayerFragment
ImageStore: Moved blurring logic, added ImageType enum
Style: Removed action bar shadow
CloseableIteratorAsyncLoader: fixed show stopper; don't close iterator on stop loading
MusicPlayerFragment: added padding, ellipses
ModelListView: removed card style
SingleAlbumListFragment: Add self to back stack when transitioning to music player
MusicPlayerFragment: Added UpdatePlayerInfoUiTask