add 5 minute cache rule
Merge tag 'v2.2.1' into ws-master

Version 2.2.1
Merge tag 'v2.2.2' into ws-master

Version 2.2.2
fix text view to use tinymce serialized
Merge tag 'v2.3.1' into ws-master

Version 2.3.1
public submission error_callback works for multi-locales (fix issue #845)
Merge pull request #2 from local-ch/cherry-pick

Cherry pick