Reverting the theme to light for the demo and switching icons set.

Change-Id: Ic3f7b46ce56100aabc1b7df3370218cbfd94db0c
diff --git a/web/gui/src/main/webapp/index2.html b/web/gui/src/main/webapp/index2.html
index 24aeee3..ce09aab 100644
--- a/web/gui/src/main/webapp/index2.html
+++ b/web/gui/src/main/webapp/index2.html
@@ -40,14 +40,12 @@
     <!-- Base library and framework stylesheets included here -->
     <link rel="stylesheet" href="base.css">
     <link rel="stylesheet" href="onos2.css">
-    <link rel="stylesheet" href="onos_theme.css">
     <link rel="stylesheet" href="mast2.css">
     <link rel="stylesheet" href="floatPanel.css">
 
     <!-- This is where contributed stylesheets get INJECTED -->
     <!-- TODO: replace with template marker and inject refs server-side -->
     <link rel="stylesheet" href="topo2.css">
-    <link rel="stylesheet" href="topo_theme.css">
     <link rel="stylesheet" href="webSockTrace.css">
 
 
@@ -58,7 +56,7 @@
     <script src="onos2.js"></script>
 
 </head>
-<body class='theme_dark'>
+<body>
     <div id="frame">
         <div id="mast">
             <!-- NOTE: masthead injected here by mast.js -->