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/nav.html b/web/gui/src/main/webapp/nav.html
index f39ffee..0c54515 100644
--- a/web/gui/src/main/webapp/nav.html
+++ b/web/gui/src/main/webapp/nav.html
@@ -1,11 +1,5 @@
-<!-- Navigation partial HTML -->
-<h2>Navigation</h2>
-<h3>(Note - this is temporary)</h3>
-
-<ul>
-    <!-- {INJECTED-VIEW-NAV-START} -->
-    <li> <a ng-click="navCtrl.hideNav()" href="#/sample">Sample View</a></li>
-    <li> <a ng-click="navCtrl.hideNav()" href="#/topo">Topology View</a></li>
-    <li> <a ng-click="navCtrl.hideNav()" href="#/device">Device View</a></li>
-    <!-- {INJECTED-VIEW-NAV-END} -->
-</ul>
+<!-- {INJECTED-VIEW-NAV-START} -->
+<a ng-click="navCtrl.hideNav()" href="#/sample">Sample</a>
+<a ng-click="navCtrl.hideNav()" href="#/topo">Network Topology</a>
+<a ng-click="navCtrl.hideNav()" href="#/device">Device List</a>
+<!-- {INJECTED-VIEW-NAV-END} -->