Add one more level in the topics main index

[Shai Berger]

I was just looking for the middleware documentation, and when looking at ​https://docs.djangoproject.com/en/1.11/topics/ I didn't see it listed there. I kept searching, and eventually found it at ​https://docs.djangoproject.com/en/1.11/topics/http/middleware/ -- in the main index, it was "hidden" in ​https://docs.djangoproject.com/en/1.11/topics/http/ together with many other issues.

The title "handling HTTP requests" is not descriptive enough to hint at all the goodness you'll find underneath it, and I'm betting there are other topics like it; I think it would be better if we included at least one more level of this branching in the main topics index.

[Tim Graham <timograham@…>]

In 4b0211da:

Fixed #28139 -- Added another level of headings in the topics index.

[Tim Graham <timograham@…>]

In ccb3b0ee:

[1.11.x] Fixed #28139 -- Added another level of headings in the topics index.

Backport of 4b0211dad55fc9d154dd5fc5b0006a647115d75d from master

[Shai Berger]

Thanks!