refactored page actions to event subscriber (#2420)

src/EventSubscriber/Actions/SystemConfigurationSubscriber.php

@@ -0,0 +1,25 @@
+<?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\EventSubscriber\Actions;
+
+use App\Event\PageActionsEvent;
+
+class SystemConfigurationSubscriber extends AbstractActionsSubscriber
+{
+    public static function getActionName(): string
+    {
+        return 'system_configuration';
+    }
+
+    public function onActions(PageActionsEvent $event): void
+    {
+        $event->addHelp($this->documentationLink('configurations.html'));
+    }
+}