Adde slimerjs support to JS tests This commit contains 16 more, squashed commits: Added slimerjs flag Fixed some bugs with flag code Figured out how to add arg correctly Cleanup Improvements to the test framework for FF Log to see if slimmer is actually running Added print in controller to debug Added full logging to casperjs Remove the special logging logic since it was caussing a failure remove notebook.dirty = false line in favor of overwritting onbeforeunload. Capture output for slimerjs Fixed iptestcontroller rebase issues Fixed rebase issues. Wait for notebook to load completely before testing Fixed stdout capture for slimerjs tests. Clean-up comments in util.js Added slimerjs to Travis Fixed indent .travis.yml Comment out slimerjslauncher env var. Removed zmq flag which doesn't work there anyways, it was added by me in a recent commit Fixed travis yaml, broken because of rebase