Fixing hotpotatoe bug when viewing the exercise list as an student

main/exercice/exercice.php

@@ -870,7 +870,7 @@ if (isset($attribute['path']) && is_array($attribute['path'])) {
             if ($active == 1) {
                 $nbrActiveTests = $nbrActiveTests +1;
                 $item .= Display::tag('td', '<a href="showinframes.php?'.api_get_cidreq().'&file='.$path.'&cid='.api_get_course_id().'&uid='.api_get_user_id().'"'.(!$active?'class="invisible"':'').'">'.$title.'</a>');
-                $item .= Display::tag('td', '');
+                //$item .= Display::tag('td', '');
                 $actions ='<a href="exercise_report.php?' . api_get_cidreq() . '&path='.$path.'">' . Display :: return_icon('test_results.png', get_lang('Results'),'',ICON_SIZE_SMALL).'</a>';
                 $item .= Display::tag('td', $actions);
                 echo Display::tag('tr',$item, array('class'=>$class));

main/exercice/exercise_report.php

@@ -60,11 +60,11 @@ $filter_user    = isset($_REQUEST['filter_by_user']) ? intval($_REQUEST['filter_
 $locked = api_resource_is_locked_by_gradebook($exercise_id, LINK_EXERCISE);
 
 if (empty($exercise_id)) {
-    api_not_allowed();
+    api_not_allowed(true);
 }
 
 if (!$is_allowedToEdit) {
-    api_not_allowed();
+    api_not_allowed(true);
 }
 
 if (!empty($exercise_id))