Add 1.2 beta release notes to release notes index.
Add 1.2 beta release notes to release notes index.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@12391 bcc190cf-cafb-0310-a4f2-bffc1f526a37

aparo/django-nonrel,FlaPer87/django-nonrel,FlaPer87/django-nonrel,aparo/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel