[gnome-music] (7 commits) Non-fast-forward update to branch wip/jfelder/headerbar-smooth-transition

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/headerbar-smooth-transition' 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:

  e153c16... headerbar: Smooth selection-mode transition

Commits added to the branch:

  6e1f355... data: Tabs to spaces in CSS (*)
  a0231ec... Update Greek translation (*)
  dfac722... Update Greek translation (*)
  5cb6f5c... flatpak: Switch Grilo to meson buildsystem (*)
  cf34619... playlistview: Use Gtk.Template (*)
  ab46e6f... playlistcontrols: Add songs-count property (*)
  e76c86e... headerbar: Smooth selection-mode transition

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