[1.1.X] Fixed #12880 -- Added some missing sphinx directives for module...

[1.1.X] Fixed #12880 -- Added some missing sphinx directives for module references. Thanks to psagers for the report, and timo for the patch.

Backport of r12559 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12564 bcc190cf-cafb-0310-a4f2-bffc1f526a37