added blocklist function to navigation

controllers/admin.php

@@ -763,6 +763,9 @@ class AdminController extends PluginController
 
     public function blocklist_action()
     {
+        if(Navigation::hasItem($this->admin_nav_path . '/blocklist')) {
+            Navigation::activateItem($this->admin_nav_path . '/blocklist');
+        }
         $sidebar = Sidebar::get();
         $actions = new ActionsWidget();
         $actions->addLink(

plugin.manifest

 pluginname=TandemPlugin
 pluginclassname=TandemPlugin
 origin=data-quest
-version=1.5.2
+version=1.5.3
 description=Dieses Plugin ermöglicht es, Sprachtandems innerhalb der Stud.IP Platform zu bilden.
 studipMinVersion=5.0
 studipMaxVersion=5.9.99