Port Main Page Wiki to Docs website

There are some important links under developer guide and contribute guide in the wiki page https://wiki.opendaylight.org/view/Main_Page which I think needs to be updated on the read the docs website.

For example, the oxygen version doesn't contain links like  

• Startup Project Archetype 
• Administration Guide

• Security Advisories 

and others.

A curated list of what important links need to be imported would be helpful.