Adds Drag and Drop UI to the Dialer main view.

- Adds drag and drop listner.
- Changes the FavoritesTileAdapter to use an array stored in cache to
  populate the view.
- Adds animation for drag and drop.
- Adds swipe to delete an entry.

Change-Id: I0717fb3d256b2ab2353f86a998de07edb24e9b4c