First pass at svg icons and dark theme for topo
Have not addressed top bar etc

Change-Id: I0cc47a1f500bd9d8589eeaf8042f21ec4c8e6cbe
diff --git a/web/gui/src/main/webapp/index2.html b/web/gui/src/main/webapp/index2.html
index ce09aab..24aeee3 100644
--- a/web/gui/src/main/webapp/index2.html
+++ b/web/gui/src/main/webapp/index2.html
@@ -40,12 +40,14 @@
     <!-- 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">
 
 
@@ -56,7 +58,7 @@
     <script src="onos2.js"></script>
 
 </head>
-<body>
+<body class='theme_dark'>
     <div id="frame">
         <div id="mast">
             <!-- NOTE: masthead injected here by mast.js -->