Enhanced look and feel of the GUI navigation pane to be consistent with the mast-head look and feel. Also enabled the dynamic content generation in web.xml by default; accessible via onos/ui/main.html URL.

Change-Id: I9f3ad321ff3eadc4092bd131f30568ec7c7b6f9d
diff --git a/web/gui/src/main/webapp/WEB-INF/web.xml b/web/gui/src/main/webapp/WEB-INF/web.xml
index f087094..511ceac 100644
--- a/web/gui/src/main/webapp/WEB-INF/web.xml
+++ b/web/gui/src/main/webapp/WEB-INF/web.xml
@@ -50,6 +50,7 @@
     -->
 
     <!--
+    -->
     <servlet>
         <servlet-name>Index Page</servlet-name>
         <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
@@ -125,7 +126,6 @@
         <servlet-name>View Module</servlet-name>
         <url-pattern>/app/view/*</url-pattern>
     </servlet-mapping>
-    -->
 
     <servlet>
         <servlet-name>JAX-RS Service</servlet-name>