Marvin Scholz authored May 13, 2016 and Jean-Baptiste Kempf committed May 15, 2016

This overhauls the VLC Status Bar Icon for OS X
It completely changed the appearance, using a mini-player instead of
simple menu items.
Additionally the current playing track with metadata is shown, including
it's coverart, if any.

TODO:
  - Use more of the InputManager hooks to prevent unnecessary updates
  - Refactor the metadata update code, it's a  bit cluttered
  - Increase accessibility

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>