[gnome-music] Non-fast-forward update to branch wip/mschraal/playlistcontrols-disable-play-on-empty

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/playlistcontrols-disable-play-on-empty' was changed in a way that was not a 
fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  f2e5f3c... playlistcontrols: Disable play item on empty list
  f08121a... playlistcontrols: Minor cleanups

Commits added to the branch:

  3d86700... playlistcontrols: Disable play item on empty list