[gtk] (11 commits) ...Merge branch 'widget-class-actions-2' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  9b62da1... Give the action muxer a widget (*)
  ef031e1... Allow registering actions per-class (*)
  421e9c3... text: Use the new action machinery (*)
  ccccaa2... password entry: Adapt to action name change (*)
  90701cb... label: Use the new action machinery (*)
  04bace1... textview: Use the new action machinery (*)
  dafb705... window: Use the new action machinery (*)
  01e89f9... link button: Use the new action machinery (*)
  7dbeee5... color chooser widget: Use the new action machinery (*)
  6581d66... Docs: expand actions chapter (*)
  cdee827... Merge branch 'widget-class-actions-2' into 'master'

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