Fixed #14012 -- Corrected the handling of the create user popup dialog in the...

Fixed #14012 -- Corrected the handling of the create user popup dialog in the admin. Thanks to gk@lka.hu for the report, and Ramiro Morales for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13501 bcc190cf-cafb-0310-a4f2-bffc1f526a37