[gnome-music] (8 commits) Non-fast-forward update to branch wip/mschraal/template-about

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/template-about' 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:

  1bf266a... application: Use Gtk.Template for about dialog

Commits added to the branch:

  97862e3... application: Drop libnotification (*)
  d8883d1... Update Polish translation (*)
  f591746... Update Turkish translation (*)
  6d36809... Updated Czech translation (*)
  6b348a4... data: Stop using deprecated Gtk.Arrow (*)
  b95c4cc... data: Remove duplicate property (*)
  dac41a7... Updated Slovenian translation (*)
  2c9c3f1... application: Use Gtk.Template for about dialog

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