[1.0.X] Fixed #8184 -- Added a note to the documentation for reverse() that all

views must be importable for URL reversing to work correctly.

Backport of r9167 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9173 bcc190cf-cafb-0310-a4f2-bffc1f526a37