Update NEWS

Forgot to save before committing the release...
No big news anyway.
window-list: import gettext for the right domain

Default _ is gettext from gnome-shell domain, which doesn't have
the strings we need.
We could use mutter's, but translators already did their job
on pretty much all supported languages, so...
drive-menu: fix interesting check

In case of shadowed mounts, mounts can become uninteresting
after they are added, according to whether our handler or gvfs
runs first, so we need to watch for changes. The easiest way
is to create an item for all mounts, and only show the interesting
ones.