use same navigation title for older Stud.IP, re #177

VipsPlugin.php

@@ -92,14 +92,9 @@ class VipsPlugin extends StudIPPlugin implements StandardPlugin, SystemPlugin, P
         $path = vips_contents_nav_path();
 
         if (Navigation::hasItem($path)) {
-            if (version_compare($GLOBALS['SOFTWARE_VERSION'], '5.0', '<')) {
-                $nav_item = new Navigation(_vips('Meine Aufgaben'));
-            } else {
-                $nav_item = new Navigation(_vips('Aufgaben'));
-                $nav_item->setImage(Icon::create(vips_image_url('vips_blue.svg')));
-                $nav_item->setDescription(_vips('Erstellen und Verwalten von Aufgaben in Vips'));
-            }
-
+            $nav_item = new Navigation(_vips('Aufgaben'));
+            $nav_item->setImage(Icon::create(vips_image_url('vips_blue.svg')));
+            $nav_item->setDescription(_vips('Erstellen und Verwalten von Aufgaben in Vips'));
             Navigation::addItem($path . '/vips', $nav_item);
 
             $sub_item = new Navigation(_vips('Aufgabenblätter'), $this->url_for('pool/assignments'));