Fix executions table th mismatch

(cherry picked from commit 7727c93)

Author: thijskh

webapp/src/Controller/Jury/ExecutableController.php

@@ -116,7 +116,7 @@ public function indexAction(Request $request): Response
         return $this->render('jury/executables.html.twig', [
             'executables' => $executables_table,
             'table_fields' => $table_fields,
-            'num_actions' => $this->isGranted('ROLE_ADMIN') ? 3 : 0,
+            'num_actions' => count($execactions),
             'form' => $form->createView(),
         ]);
     }