Added hardware sensors functionality

Change-Id: I99435613bb77fc0ff72f046c2dc047b13962a7a3
Signed-off-by: Iftekharul Islam <iislam@us.ibm.com>
diff --git a/app/server-health/controllers/sensors-overview-controller.js b/app/server-health/controllers/sensors-overview-controller.js
index 213a4e3..d68b31f 100644
--- a/app/server-health/controllers/sensors-overview-controller.js
+++ b/app/server-health/controllers/sensors-overview-controller.js
@@ -64,7 +64,10 @@
                 }
 
                 $scope.toggleSeverityAll = function(){
-                    $scope.selectedSeverity.all = !$scope.selectedSeverity.all;
+
+                    if($scope.selectedSeverity.all !== true){
+                      $scope.selectedSeverity.all = !$scope.selectedSeverity.all;
+                    }
 
                     if($scope.selectedSeverity.all){
                         $scope.selectedSeverity.normal = false;