[gtk] (12 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:

  9ae1cbc... gsk: Fix a doc oversight
  b7b8edd... gdk: Fix a doc oversight
  994f60c... gtk: Fix a doc oversight
  c235783... menubutton: Fix a gtk-doc complaint
  2c1033c... popover: Document signals
  c6cfc80... docs: Fix the links for keybinding signals

Commits added to the branch:

  121e61c... gsk: Avoid using gtk css types in public api (*)
  a7befc6... Merge branch 'gsk-binding-api' into 'master' (*)
  437f902... Fix a warning caused by difference between prototype and de (*)
  2abee57... widget-factory: Fix caption style class name (*)
  acd8b08... Merge branch 'wip/exalm/caption' into 'master' (*)
  fceff93... Merge branch 'fix-gi-warning' into 'master' (*)
  9a29487... gsk: Fix a doc oversight
  fa79e86... gtk: Fix a doc oversight
  cd4c0b6... menubutton: Fix a gtk-doc complaint
  3bc2bf4... popover: Document signals
  2ef7244... docs: Fix the links for keybinding signals
  835c807... widget-factory: Remove an unused size group

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