Fixed #13098 -- Updated Norwegian (Bokmål) translation in both the deprecated...

Fixed #13098 -- Updated Norwegian (Bokmål) translation in both the deprecated "no" and the new "nb" variant. Thanks to jonklo.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13088 bcc190cf-cafb-0310-a4f2-bffc1f526a37