Comment 15 for bug 991755

A new branch wait for merge. I tested it under gnome-shell and unity.

App menu is shown under gnome shell but the menubar is not.

Under Unity menubar is shown while app menu is not.

I had to (sort of) duplicate some code related to callback since app menu and menubar doesn't take the same parameters. I'm not sure it's the best solution, I'd like to hear your thought about this.

Thanks !