Configure novnc to implement browser-based VNC client accessible from CloudMan.
Add some simple documentation for novnc options to fabricrc, feel free to backout of this commit if that fabricrc file is getting to verbose.
Disable novnc by default, enable by setting  in fabricrc.
Merge pull request #61 from jmchilton/novnc

noVNC Integration (Access In-Browser VNC Client from CloudMan)