[gtk] (8 commits) Non-fast-forward update to branch wip/ricotz/annotations

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ricotz/annotations' 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:

  af9423a... gtk: Add some g-i annotations to GtkStringList

Commits added to the branch:

  3d3d7db... stringfilter: Fix a typo (*)
  d0e5610... Drop unused includes (*)
  1f410fa... searchentry: Update the docs slightly (*)
  c9b032a... gtk-demo: Fix a typo in the listbox demo (*)
  30e79e8... docs: Fix a typo (*)
  0ec868b... inspector: Adapt to dropdown api change (*)
  0ef0edf... Merge branch 'matthiasc/for-master' into 'master' (*)
  5b1195f... gtk: Add some g-i annotations to GtkStringList

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