Check to see if the content-type header is uppercase or lowercase
Check to see if the content-type header is uppercase or lowercase

git-svn-id: e60b85720aee3e1efa4bc2ed809a8ce4669f845b@22830 40f73b84-6177-4a8e-8c61-7eee4b1974ed

socialplanning/CSRFMiddleware