[gnome-music] (28 commits) Non-fast-forward update to branch wip/jfelder/simplify-playlistdialog

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/simplify-playlistdialog' 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:

  a5535cc... playlistdialog: Do not show stack at init
  d08567b... grilo: Add function to populate user playlists
  40cdffd... playlistdialog: Do not retrieve smart playlists
  c9f5126... grilo: Remove unused method playlists_available

Commits added to the branch:

  8a73b16... Update Russian translation (*)
  2456abb... help: Fix tag in Catalan translation (*)
  752bdaa... data: Remove domain from ui files (*)
  bf0c95f... potfiles: Remove files without translatable strings (*)
  f227826... player: Add docstring to two public functions (*)
  f54f9a1... playlistdialog: Rename headerbar title (*)
  8704cc3... playlistdialog: Add ellipsis to new-playlist-entry (*)
  0120101... playlistdialog: Change empty state image layout (*)
  84edf88... player: Factor out GStreamer (*)
  08cd52a... player: Factor out progressbar handling (*)
  b679e2c... player: Update scrobbling rules (*)
  f5c26f0... gstplayer: Simplify ReplayGain (*)
  1858984... CI: Remove player.py from flake8 exceptions (*)
  af7f306... playlists: Fix gi import versioning (*)
  6598f87... albumartcache: Fix GstTag import versioning (*)
  9d7c86d... player: Rely on logic for next/previous operations (*)
  e523c01... player: Remove unused variable in set_playing (*)
  09af898... query: Fix searches with respect to composer (*)
  df6f34e... gstplayer: Return uri instead of current-uri (*)
  5ed4093... player: Remove _current_track_uri (*)
  5b48ef0... player: Add missing docstring to url getter (*)
  954146b... player: Fix missing current_track renaming (*)
  8289679... CI: Fix flake8 logic (*)
  2d0efd4... widgets: Use Playback enum (*)
  606fabb... playlistdialog: Do not show stack at init
  7d8db29... grilo: Add function to populate user playlists
  f73bba3... playlistdialog: Do not retrieve smart playlists
  b54b130... grilo: Remove unused method playlists_available

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