[1.2.X] Fixed #9213 - Added check to prevent inactive users from resetting...

[1.2.X] Fixed #9213 - Added check to prevent inactive users from resetting their password. Thanks to John Scott for report and draft patch, and Evgeny Fadeev for final patch with test.

Backport of r15805 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15808 bcc190cf-cafb-0310-a4f2-bffc1f526a37