GUI -- implemented Theme Service.
 - moved body class handling into Theme Service, (out of Key Service).

Change-Id: Ied0d22523fec36cadef8b9669194089585f73959
diff --git a/web/gui/src/main/webapp/app/index.html b/web/gui/src/main/webapp/app/index.html
index 14a029f..7699630 100644
--- a/web/gui/src/main/webapp/app/index.html
+++ b/web/gui/src/main/webapp/app/index.html
@@ -35,6 +35,7 @@
 
     <script src="fw/util/util.js"></script>
     <script src="fw/util/fn.js"></script>
+    <script src="fw/util/theme.js"></script>
     <script src="fw/util/keys.js"></script>
 
     <script src="fw/mast/mast.js"></script>