loader animation added to pages

Change-Id: Id8c890714d0a90ae913b6581cd655abcf6cd6781
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/server-health/controllers/sensors-overview-controller.js b/app/server-health/controllers/sensors-overview-controller.js
index d68b31f..90616b1 100644
--- a/app/server-health/controllers/sensors-overview-controller.js
+++ b/app/server-health/controllers/sensors-overview-controller.js
@@ -32,6 +32,7 @@
                     critical: false
                 };
                 $scope.export_name = "sensors.json";
+                $scope.loading = false;
                 $scope.jsonData = function(data){
                     var dt = {};
                     data.data.forEach(function(item){
@@ -110,11 +111,13 @@
                 }
 
                 $scope.loadSensorData = function(){
+                    $scope.loading = true;
                     APIUtils.getAllSensorStatus(function(data, originalData){
                         $scope.data = data;
                         $scope.originalData = originalData;
                         dataService.sensorData = data;
                         $scope.export_data = JSON.stringify(originalData);
+                        $scope.loading = false;
                     });
                 };