[1.3.X] Fixed #16004 - csrf_protect does not send cookie if view returns TemplateResponse

The root bug was in decorator_from_middleware, and the fix also corrects
bugs with gzip_page and other decorators.

Backport of [16276] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.3.X@16279 bcc190cf-cafb-0310-a4f2-bffc1f526a37