[grilo-plugins] (2 commits) Non-fast-forward update to branch wip/jfelder/musicbrainz-release-group-coverart

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/musicbrainz-release-group-coverart' 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:

  c1b8a50... acoustid: Add a runtine mb-release-group-id key
  5cc5545... musicbrainz: Support release-group cover art

Commits added to the branch:

  0150fc7... acoustid: Add a runtine mb-release-group-id key
  7772e20... musicbrainz: Support release-group cover art