Add basic loading of xmpp-ftw and buddycloud connection

FAO @guilhermesgb 

This code anonymously logs into buddycloud.org, it registers with the server, and then sends a presence notification. Status information is given at the bottom of the page.

All you need to do now is register the incoming events you want to listen for, e.g. push events from the server. Then you'll just need to make the calls you want as per https://xmpp-ftw.jit.su/manual/extensions#buddycloud.

If I can be of any more help please let me know, Lloyd.