[gnome-music] (23 commits) Non-fast-forward update to branch wip/mschraal/artrework

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/artrework' 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:

  f2bd879... albumartcache: Rework art retrieval
  29ebf9e... Move ArtSize into the Art class.
  6fb3fcd... albumartcache: Rewrite AlbumArtCache

Commits added to the branch:

  12ecb35... window: Replace deprecated add_accelerator call (*)
  3b1f3e5... playlistview: Port sidebar to Gtk.ListBox (*)
  657382d... playlistview: Use a context menu to edit tracks (*)
  53b943e... playlistview: Do not remove song from static playlist (*)
  1a83c40... playlistview: Cleanup, hanging indents (*)
  d1404c1... playlistview: Reset song to clean on playlist change (*)
  e3b2c61... Update POTFILES.in (*)
  a9b91c1... Update German translation (*)
  26e2e0c... Update Esperanto translation (*)
  93c02e5... Update Hungarian translation (*)
  97b941c... albumartcache: Rework art retrieval
  b023974... Move ArtSize into the Art class.
  0487aa1... albumartcache: Rewrite AlbumArtCache
  12b660b... albumartcache: Fix DefaultIcon docstring
  62116c5... rework Art some more
  ef4e4ef... factor pixbuf out
  41bf044... split out GtkImage
  d8aa773... ArtImage
  cb7ecd3... Fix error messages
  a6f5b32... albumartcache: Add local cover.jpg resolution
  f6c9b37... move scale to get()
  9c37772... searchview: Use cairo surface instead of pixbuf
  a7a082d... albumartcache: Uppercase DefaultIcon.Type enum

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