first spike of #212 so we can at least make a GET on the JBoss management API on a remote container using the proxy servlet; though it seems we can only do GET and the POST is not authorised for some reason. e.g. try using something like: http://localhost:8000/hawtio/#/jboss/dmr?_user=foo&_pwd=something
 - no attempt yet to view/navigate the data too much yet; wanted to get the basics going first