Add notification ack api wrapper

src/js/client.js

@@ -739,6 +739,15 @@ angular.module('Application').service('Client', ['$http', '$interval', 'md5', 'N
         });
     };
 
+    Client.prototype.ackNotification = function (notificationId, callback) {
+        post('/api/v1/notifications/' + notificationId, {}, null, function (error, data, status) {
+            if (error) return callback(error);
+            if (status !== 204) return callback(new ClientError(status));
+
+            callback(null);
+        });
+    };
+
     Client.prototype.getEventLogs = function (actions, search, page, perPage, callback) {
         var config = {
             params: {