Add documentation on OAuth2

Review Request #9378 — Created Nov. 15, 2017 and submitted — Latest diff uploaded

Information

Review Board
release-3.0.x
65b5ecc...

Reviewers

This change adds a new page to the docs for how to use OAuth with the
Review Board API. This includes the specifics of using the UI to
register a new application, as well as the details of the authorization
handshake.

Built HTML, checked output.