Replace node js http server code with python

[atsakiridis]

Since most of our code base is in python let's keep it pure-python to make deployment easier (nodejs needed a couple more non-default modules)

[atsakiridis]

Fixed with b0b39ad

[atsakiridis]

Unfortunately, seems that python in the https server end doesn't scale that well :(. With 30 clients trying to load the web app some fail. On the other hand node js seems to be handing them without issue. So I'm reverting back to the old logic where python is the main script, but the http server part is in node.