Fixed #10636 -- Added check to make sure the ADMIN_MEDIA_PREFIX setting is properly set before serving files with the AdminMediaHandler.
Fixed #10636 -- Added check to make sure the ADMIN_MEDIA_PREFIX setting is properly set before serving files with the AdminMediaHandler.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@14593 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django