[gtk] (13 commits) Non-fast-forward update to branch editable-label

[Matthias Clasen <matthiasc src gnome org>]

The branch 'editable-label' 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:

  14eaede... Add a GtkEditableLabel widget
  6185e36... gtk-demo: Use editable labels in the settings demo

Commits added to the branch:

  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 (*)
  07ecb3c... Merge branch 'fix-custom-paper-dialog' into 'master' (*)
  106e108... Merge branch 'matthiasc/for-master' into 'master' (*)
  770d6cb... paperdialog: Drop the private struct (*)
  e06bb8b... Add a GtkEditableLabel widget
  1082889... gtk-demo: Use editable labels in the settings demo
  54bc782... paperdialog: Port to use GtkListView

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