Fixed #15237 (again). RSS feeds now include proper character encoding in the...

Fixed #15237 (again). RSS feeds now include proper character encoding in the mimetype. Thanks shadow for the report and Michal Rzechonek for the patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17494 bcc190cf-cafb-0310-a4f2-bffc1f526a37