Revert "Use relative path to load assets in production and for AJAX requests."

This reverts commit db1964fb48888620b8ef2a90206b8f1a08cb80be.
Simpler deploy rake.
Add bin scripts to run git commands with different ssh key easily.
Change submodule url of to cocoa-tree.github.io.git.
Update submodule.
Update website-deploy to public url.