[gtk] (8 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' 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:

  cc18e81... dropdown: Make the stack nonhomogeneous
  cfef330... testdropdown: Add some more tests
  e8fb704... printeroptionwidget: Port to GtkDropDown
  05764e4... printdialog: Replace some combo boxes with drop downs

Commits added to the branch:

  0d901ef... Update Ukrainian translation (*)
  e6dcd55... Fix the custom paper dialog (*)
  933e373... dropdown: Make the stack nonhomogeneous
  8671843... testdropdown: Add some more tests
  c3b43f2... printeroptionwidget: Port to GtkDropDown
  ed9941e... printdialog: Replace some combo boxes with drop downs
  c80ba49... Adwaita: Allow separators on individual list items
  74ac435... printdialog: Replace the papersize combo with a dropdown

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