Added hardware sensors functionality

Change-Id: I99435613bb77fc0ff72f046c2dc047b13962a7a3
Signed-off-by: Iftekharul Islam <iislam@us.ibm.com>
diff --git a/app/common/directives/app-navigation.html b/app/common/directives/app-navigation.html
index 4891c61..7a48757 100644
--- a/app/common/directives/app-navigation.html
+++ b/app/common/directives/app-navigation.html
@@ -1,4 +1,4 @@
-<nav>
+<nav class="nav__wrapper">
 	<ul id="nav__top-level" ng-style="navStyle">
 		<li>
 			<a class="btn-overview" ng-class="{opened: firstLevel == 'overview'}" href="#/overview/system" ng-click="change('overview')" tabindex="1">