GUI -- Clean up of index.html and onos.js generation.

Change-Id: Icc1cdeb0e36b29bb76cee9d90fb342e131b78644
diff --git a/web/gui/src/main/resources/core/css.html b/web/gui/src/main/resources/core/css.html
index 97bee6b..49f4ff6 100644
--- a/web/gui/src/main/resources/core/css.html
+++ b/web/gui/src/main/resources/core/css.html
@@ -1 +1 @@
-<!-- Builtin view stylesheets are in the main index.html -->
+<!-- Builtin view stylesheets defined in index.html template -->