* Removed flatpages/redirects README; no other contrib apps have those.
* Cleaned up top-level README to be more readable.
* Removed outdated references to old docs (Fixes#8701)
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8857 bcc190cf-cafb-0310-a4f2-bffc1f526a37