Added a lower level test for numberformat when grouping is 0 and...

Added a lower level test for numberformat when grouping is 0 and force_grouping is True. Thanks Claude Paroz. Refs #17414.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17268 bcc190cf-cafb-0310-a4f2-bffc1f526a37