some http urls in the website prevent full local testing

If you create a local / test instance of the website (e.g., "jekyll server") all of the javadoc related links go to the live website.

site/_config.yml defines docurl which is used in many places. See the note there about issues encountered when I tried changing it from a http url to a / url... though overall it seemed to work.

Also the javadoc "latest", 1.0.0, ... links in site/_data/mydoc/mydoc_topnav.yml are http links.