Support set url path and use relative url, move raphael to bower and fixed minor issue in history

lib/realtime.js

@@ -240,7 +240,7 @@ function getNotenameFromSocket(socket) {
         return socket.disconnect(true);
     }
     var hostUrl = url.parse(referer);
-    var notename = hostUrl.pathname.split('/')[1];
+    var notename = config.urlpath ? hostUrl.pathname.slice(config.urlpath.length + 1, hostUrl.pathname.length).split('/')[1] : hostUrl.pathname.split('/')[1];
     if (notename == config.featuresnotename) {
         return notename;
     }