Implemented WebSockets for GUI2

Change-Id: I4776ce392b1e8e94ebee938cf7df22791a1e0b8f
diff --git a/web/gui2/src/main/webapp/index.html b/web/gui2/src/main/webapp/index.html
index 83d2b6c..9ca6a02 100644
--- a/web/gui2/src/main/webapp/index.html
+++ b/web/gui2/src/main/webapp/index.html
@@ -26,6 +26,7 @@
 
     <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,700'
           rel='stylesheet' type='text/css'>
+    <link href="onos.theme.css" type='text/css'>
     <link href="app/fw/layer/loading.service.css" rel='stylesheet' type='text/css'>
     <base href="/">
     <title>ONOS</title>