fix serving from a non-default host/port.

js/babl/public/index.html

@@ -16,7 +16,7 @@
			setTimeout(loadHistory, 0);
			var ws = new WebSocket("ws://localhost:8080");
			var ws = new WebSocket("ws://" + location.host);
			inputEl.onkeyup = function(ev) {
				if (ev.keyCode == 13) {