Fixed #8129: Modified the password reset email template to use a URL lookup,...

Fixed #8129: Modified the password reset email template to use a URL lookup, so that the email doesn't require customization based on the way that the reset view is deployed. Thanks to davenaff for the report and fix.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8517 bcc190cf-cafb-0310-a4f2-bffc1f526a37