- Modified playlist model to use normal backbone fetching (i.e. no apiClient)
- PlayQueue keeps track of nowPlayingIndex on its model instead of a class variable now
- The play queue is now persisted to localStorage
- Push animation is no longer invoked when tapping a section on the sidebar
- Added an action sheet when right clicking a playlist in the sidebar
  menu
- Can delete playlists from that sidebar menu (when HTTP verbs get API
  support)