Add test case for ScriptableUUID and stuffs

The first commit is to run Play applications in JavaScript console, because of the same reason with one for the plugin test runner.

The second commit is to change mongodb's dbpath and zookeeper data directory to `data/test`. Other targets' paths are already all refering to `data/{target_name}`.

The last commit adds the test case.

@sgkim126 @kimchoco, review this pls.

And I can't find out how to turn off INFO logs for the test target. I've tried as many ways as possible, but no luck. Do you have any idea?