Bumped the version number in the docs to reflect Djagno 1.1 is released.

This changes a bunch of "new in development version" annotations to say
"new in Django 1.1" for example.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11413 bcc190cf-cafb-0310-a4f2-bffc1f526a37