[gtk] (11 commits) ...Merge branch 'otte/for-master' into 'master'

[Benjamin Otte <otte src gnome org>]

Summary of changes:

  6d20fe0... expander: Rename CSS nodes (*)
  9f5ee77... singleselection: Fix model property (*)
  1b68e76... gtk: Add GtkNoSelection (*)
  01be7f0... widget: Make gtk_widget_activate_action() return TRUE/FALSE (*)
  19304c1... bindings: Add gtk_binding_entry_add_action() (*)
  a1a70a1... bindings: Add gtk_binding_entry_add_callback() (*)
  427deb4... widget: Make gtk_widget_grab_focus() return a boolean (*)
  14c34a7... widget: Make grab_focus() fail on insensitive widgets (*)
  9c1b1eb... widget: Insist that widgets are rooted to be focusable (*)
  4eb0779... widget: Don't grab focus when can-focus == false (*)
  7fc74ea... Merge branch 'otte/for-master' into 'master'

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