[gtk] (3 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:

  70e91b0... docs: Cosmetic updates to the tutorial
  760b6ce... applicationswindow: Make show-menubar FALSE by default
  97751f4... Refresh the tutorial examples

Commits added to the branch:

  e33de6d... docs: Cosmetic updates to the tutorial
  160821d... applicationswindow: Make show-menubar FALSE by default
  61e960a... Refresh the tutorial examples