* Upload docs to main branch of neps/devdocs

* Update `master` to `main` to be consistent with current state of renaming

* Remove badges from README

* Replace remaining instances of `master` with `main`

* Add back logo

* Fix CircleCI branch checks

* Fix GA branch name

* master->main in issue templates.

* master->main for 2 links to numpy archive.

* Change master to main in NEP 23

Co-authored-by: Ross Barnowski <rossbar@berkeley.edu>

* DOC: Simplify and update git setup page

Changed title from "Getting started with Git development"
to more specific "Setting up git for NumPy development"

Updated the outdated GitHub screenshot for forking button, added
more screenshots.

Simplified the narrative.

Fixed bad github links (always pointed to NumPy's github).

Clarified SSH setup, role, and effect on git remote -v.

Clarified meaning of "upstream" and "origin".

Replaced read of .git/config (platform-specific) with call to git config.

* DOC: Add links, remove section from PR #16671

Per suggestion, removed outdated advice on getting pull branches.

Added back rST anchors, should have left them in.

* DOC: Add page anchor for PR #16671

Add '.. _development-setup:' page anchor.

The remote upstream fetch git-config command was missing two asterisks,
most likely lost in a markdown accident.

This is easier to get going, and is the recommended access method
by GitHub itself:
https://help.github.com/articles/which-remote-url-should-i-use/

Also add instructions for pulling from upstream including PRs
by default.

This section is outdated, and following it pretty much ensures that your
patches will languish in Trac.