Do not render listings through custom template, just render default

src/UNL/Catalog.php

@@ -429,7 +429,7 @@ class UNL_Catalog
             $format = 'toHtml';
         }
         $savvy = $this->getCourseRenderer();
-        $this->p->maincontentarea .= $savvy->render($listing, 'Listing.tpl.php');
+        $this->p->maincontentarea .= $savvy->render($listing);
     }
     
     /**