Add functionallity for editing po files through the use of the django-rosetta

here are some instruction on how to install it.
http://code.google.com/p/django-rosetta/

there are also some changes to the admin files because they did not play nice with makemessages.

git-svn-id: http://svn.osqa.net/svnroot/osqa/trunk@86 0cfe37f9-358a-4d5e-be75-b63607b5c754