Here's a rendered copy of the changes: http://techytim.com/django/14633/ref/settings.html
Fixed #14633 - Organized settings reference docs
IANACD (not-a-core-dev), but, I have used a similar organization in my own Django projects in settings.py in the past and so I have some feedback here.
Merge branch 'master' into 14633
Added a topical index
Yeah, I like that new topical breakdown!