correct syntax error in realTimeGraph
Makefile: identify more .PHONY targets
Makefile: add test for couchdb running
convert ACTUAL_ROOT to Lab.config.actualRoot

When using a generated static distribution and deploying
to a nested folder follow instructions in readme to
customize this value.

Include lab.config and lab.version in energy2d and grapher
builds.
added target to create symlinks in the server/public directory
added the default actualRoot to the config_sample.yml
changed the path for the default interactive so its loaded from Rails interactive resource instead of a static file.