GUI -- Topo View: define SVG layer; inject (sample) key bindings and install glyph definitions.

Change-Id: I1c063b0484a9cedcf8e57a35cc51c3c4b35c9329
diff --git a/web/gui/src/main/webapp/app/index.html b/web/gui/src/main/webapp/app/index.html
index da61ee1..c238d7f 100644
--- a/web/gui/src/main/webapp/app/index.html
+++ b/web/gui/src/main/webapp/app/index.html
@@ -40,6 +40,12 @@
 
     <script src="fw/mast/mast.js"></script>
 
+    <script src="fw/svg/svg.js"></script>
+    <script src="fw/svg/glyph.js"></script>
+    <script src="fw/svg/icon.js"></script>
+    <script src="fw/svg/map.js"></script>
+    <script src="fw/svg/zoom.js"></script>
+
     <!-- Framework and library stylesheets included here -->
     <!-- TODO: use a single catenated-minified file here -->
     <link rel="stylesheet" href="onos.css">