fully bootstrapped server

 On branch usr

	modified:   docs/create-devbox.md
	new file:   usr/configs/rsync-exclude.list
	renamed:    usr/libexec/jfd-build-devbox -> usr/libexec/jfd-bootstrap-server
	modified:   usr/libexec/jfd-deploy
	modified:   usr/libexec/jfd-install
	modified:   usr/libexec/lib/utils.sh
	new file:   virtual_machines/devbox/toehold.sh