Etiona cleanup

ubuntu-help is no longer used upstream. gnome-help is used, so patches related to swapping ubuntu-help for gnome-help aren't needed.

The upstream gnome-icon-theme doesn't contain ubuntu branding now - this has been moved.

gnome-desktop is gone upstream. There is now ubuntu-gnome-desktop or vanilla-gnome-desktop to pick from.

virtualbox is in multiverse upstream, non-free due to proprietary tools needed to build virtual firmware in it.