[Doc-SIG] Moving language and version switchers out of cpython

[Julien Palard]

Hi,

> I like this idea a lot.  It's a pain to have update each branch's
> switcher and then they eventually go out-of-date.

The current implementation is working for me \o/ : 
https://github.com/python/docsbuild-scripts/pull/91

If anyone want to review, it would be appreciated, I'll merge it later.

> I'm not sure what you are suggesting replacing the index sidebar with
> for the standalone build.  But perhaps rather than the current links to
> and status of recent branches, it could have a few generic links to
> the docs on the website, something like:
> 
> stable -> https://docs.python.org/
> in development -> https://docs.python.org/dev/
> all versions -> https://www.python.org/doc/versions/
> more resources -> https://www.python.org/doc/

I had no idea... I'll take those links, they look great! Thanks!

-- 
[Julien Palard](https://mdk.fr)