[gtk/matthiasc/for-master] (8 commits) ...entrycompletion: Various fixes

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  ec54399... Adwaita: notebook legibility fixes (*)
  a3f4caa... Merge branch 'matthiasc/for-master' into 'master' (*)
  fff981b... Merge branch 'wip/jimmac/notebook-legibility' into 'master' (*)
  e8210d5... Add GtkStringList as public api (*)
  2cfeb10... Merge branch 'stringlist' into 'master' (*)
  2a6a0d7... gtk-demo: Improve the entry completion demo
  2b09acd... gtk-demo: Enable inline completion
  9c2eda2... entrycompletion: Various fixes

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