HornetQ-819 STOMP Web Sockets

* upgrade to Netty to io.netty 3.4.5.Final
* fix WebSocket handshake by using Netty websocketx Handshaker
* fix performance by using binary Web Socket frame and discarding the
  whole WebSocketStompFrameEncoder ugly hack
* update stomp-websocket JavaScript to latest version
  (d1f600611e) from
  https://raw.github.com/jmesnil/stomp-websocket/master/dist/stomp.js

examples/stomp-websockets/chat/chat.js

@@ -16,7 +16,6 @@ $(document).ready(function(){
     };
     // the client is notified when it is connected to the server.
     var onconnect = function(frame) {
-      debug("connected to Stomp");
       $('#connect').fadeOut({ duration: 'fast' });
       $('#disconnect').fadeIn();
       $('#send_form_input').removeAttr('disabled');
@@ -48,4 +47,4 @@ $(document).ready(function(){
     return false;
   });
 
-});
+});