Fixing contact form sending double emails Issue. Fix #22
replace underscore.js with CDN

gives us source maps for better debugging as well
update text and acknowledgements
tune log messages and reconnect on sockjs close

Need to look into proper heartbeats ala
https://github.com/sockjs/sockjs-protocol/wiki/Heartbeats-and-SockJS
to maintain connection liveness
switch to protocol independent url
autopep8 and minor refactoring