Martyn Welch authored May 28, 2020 and Emanuele Aina committed May 28, 2020

Start organising the documents on the website. Move documents that are
concerned with Apertis policies (one way or another) into a "policies"
section and link to this from the main page.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>