Integrating selenium-java-robot.

This PR integrates the [Selenium Java Robot](https://github.com/ariatemplates/selenium-java-robot) so that it is easy to start a browser to run the campaign with the `--robot-browser` command line parameter.
I think this snippet shows that it would be nice to have the possibility to pass the `Function` directly to `SeleniumJavaRobot` methods when the user doesn't need to pass `args` and `scope` :)