Updated security expressions #148 (#166)

* replace has_role() with is_granted()
* added basic integration test classes for main controller
* added basic integration test classes for admin controller

tests/Controller/ActivityControllerTest.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Controller;
+
+/**
+ * @coversDefaultClass \App\Controller\ActivityController
+ * @group integration
+ */
+class ActivityControllerTest extends ControllerBaseTest
+{
+
+    public function testIsSecure()
+    {
+        $this->markTestSkipped('no public route available');
+    }
+}