String changes in gnome-games.

[Callum McKenzie <callum physics otago ac nz>]

Just a quick note: a new game has been added to gnome-games which will
bring in a pile of new strings to be translated. I haven't had a chance to
go over it personally and I'm not sure how i18n friendly some of the
strings are. There are one of two bad strings I know of. Ignore them for
now and I'll repair them in the next week or two.

 - Callum