[gtk/matthiasc/for-master] (9 commits) ...widget-factory: Add mnemonics to the stack pages

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  e5c4302... Merge branch 'matthiasc/for-master' into 'master' (*)
  efa4174... Updated Spanish translation (*)
  700a2df... Updated Spanish translation (*)
  2fa876e... Adwaita: Use a mixin for visible focus rings (*)
  99c3928... keymap: Cache key info (*)
  e3b9f9a... Merge branch 'theme-focus-ring-mixin' into 'master' (*)
  57bf4ac... Merge branch 'speed-up-event-matching' into 'master' (*)
  cb056a1... stack: Add a :use-underline property
  f31c85f... widget-factory: Add mnemonics to the stack pages

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