gnome-settings-daemon, gnome-control-center: String additions

[Kalev Lember <kalevlember gmail com>]

Hi,

I've commited a few more last minute string additions to the datetime
panel in g-c-c and the datetime plugin in g-s-d. See the following
release-team post for details:

https://mail.gnome.org/archives/release-team/2013-September/msg00011.html

Cheers,
Kalev