Show links to all auth docs from main index

[Daniel Roseman]

There's a whole set of pages in the auth docs - about using the framework, password management, and customizing - but these are not surfaced on the main docs index page.

I have a branch (​https://github.com/danielroseman/django/tree/auth_docs_on_index) which adds links to these in the same bold heading/pipe-separated details format that we use for other subsections like Testing and Deployment, but that would make this the only element under "Common Web application tools" to use that format, which might look odd.

The alternative is to extract Authentication into its own main heading, as we do with Internationalization, Performance, etc.

[Tim Graham]

I think your tentative patch is okay. You could also add ref/contrib/auth.

[Daniel Roseman]

Thanks @timgraham, updated and PR made: ​https://github.com/django/django/pull/4840

[Tim Graham <timograham@…>]

In fd09491:

Fixed #24961 -- Added links to all auth docs pages from index.

[Tim Graham <timograham@…>]

In b3f61f6e:

[1.8.x] Fixed #24961 -- Added links to all auth docs pages from index.

Backport of fd0949181f993fb8a15c5b0128840f71ee1d7b0e from master