Describe how project websites work

Submitted by Wayne Beaton @wbeaton

Link to original bug (#514813)

Description

We don't describe how project websites work.

-- Every project gets its own website Git repository for which all project committers have push access. A scripts polls the website Git repository for changes and automatically propagates them to the site. Anything that you push to the master branch just shows up on the website after about a minute.

Consider consolidating separate related sections

https://www.eclipse.org/projects/handbook/#resources-website https://www.eclipse.org/projects/handbook/#trademarks-website https://www.eclipse.org/projects/handbook/#development-website