Fixed #11757 - Set mimetype when responding with HttpResponseNotModified in django.server.static.
Fixed #11757 - Set mimetype when responding with HttpResponseNotModified in django.server.static.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%4012141

adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel