[grilo-plugins] (6 commits) Non-fast-forward update to branch wip/jfelder/musicbrainz-release-group-coverart

[Victor Toso <victortoso 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:

  253e0e3... lua-factory: Change warning message to debug in fetch_done(
  9079a1c... tests: Update acoustid mock objects
  381531b... acoustid: Add mb-release-id and mb-release-group-id keys
  7aeb32f... musicbrainz: Support release-group cover art

Commits added to the branch:

  297ff14... Updated Spanish translation (*)
  07a3045... help: Update LINGUAS (*)
  32472ff... lua-factory: Change warning message to debug in fetch_done(
  fba9bdf... tests: Update acoustid mock objects
  ea20901... acoustid: Add mb-release-id and mb-release-group-id keys
  05bdbc8... musicbrainz: Support release-group cover art

(*) This commit already existed in another branch; no separate mail sent