This client side script is coming from https://github.com/livereload/livereload-js

We first use to inject directly from the github repo, and we moved to static service for convenience.

If we do some changes, and agree on maintaining it, then we might decide to go a bit further and try to use socket.io for better cross browser support.

I used faye-websocket for the server because I struggled making the raw WS connection without the client-side socket.io script.