[desktop] Sync with GNOME

[Gunnar Hjalmarsson]

I just worked with a few pages in the desktop guide, and some of them
had clear tracks of GNOME syncs that hadn't been sufficiently adapted to
Ubuntu. This makes we wonder if it's really advisable that we now sync
with GNOME again.

There are very few - if any - visible changes between 13.10 and 14.04.
Maybe, instead of syncing, it would be more important to manually scan
all the pages and try to eliminate as much as possible of remaining
mismatch between the docs and the desktop that will be shipped?

Kevin, IIRC this is your baby. What do you say?

-- 
Gunnar Hjalmarsson
https://launchpad.net/~gunnarhj