[gnome-music] (26 commits) Non-fast-forward update to branch wip/jfelder/empty-playlist-v2

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/empty-playlist-v2' 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:

  258d805... grltrackerplaylists: Add an icon_name property to playlists
  267ed39... playlistswidget: Display a special view for an empty playli

Commits added to the branch:

  13d168a... Update Galician translation (*)
  39f5960... starhandlerwidget: Update call for new SongsView._songs_vie (*)
  76b0ff8... artistalbumwidget: Handle discbox is None case (*)
  026e6a5... songsview: Define a model gobject property (*)
  7d3e49f... songwidget: Match show_song_number value on DnD widget (*)
  2d50d22... grltrackerplaylists: Check for failure on playlist creation (*)
  be5b49e... grltrackerplaylists: Escape playlist title on creation (*)
  f96892b... grltrackerplaylists: Escape playlist title when renamed (*)
  b91f4e8... window: Do not try to delete a playlist when renamed (*)
  6c6e315... window: Fix playlist deletion with a key (*)
  ab5c9ea... window: Remove unnecessary local variable (*)
  8edcade... Update Galician translation (*)
  af13bbc... Updated Danish translation (*)
  7470220... Updated Danish translation (*)
  a4b1e76... Update Norwegian Bokmål translation (*)
  32a3d54... Update Punjabi translation (*)
  c58b47f... Release 40.rc (*)
  1cf0f57... Release 40.0 (*)
  03b59bf... gstplayer: Fix change to stopped state (*)
  49737ba... grltrackerplaylists: Fix update playlist query when adding  (*)
  f902e2c... grltrackerplaylists: Do not add the same song several times (*)
  4e36a50... grltrackerplaylists: Fix add_songs docstring (*)
  100b95b... grltrackerplaylists: Fix removal of songs from a playlist (*)
  d40c3b9... grltrackerplaylists: Check for failure on song deletion (*)
  66932cd... grltrackerplaylists: Add an icon_name property to playlists
  1f22dae... playlistswidget: Display a special view for an empty playli

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