Add user_portal_load_notification_by_ajax validation

user_portal.php

@@ -39,9 +39,11 @@ $load_dirs = api_get_setting('show_documents_preview');
 $displayMyCourseViewBySessionLink = api_get_setting('my_courses_view_by_session') === 'true';
 $nameTools = get_lang('MyCourses');
 
-// Load notification by ajax
-$htmlHeadXtra[] =  '<script>
-$(function() {
+// Load course notification by ajax
+$loadNotificationsByAjax = api_get_configuration_value('user_portal_load_notification_by_ajax');
+if ($loadNotificationsByAjax) {
+    $htmlHeadXtra[] = '<script>
+    $(function() {
         $(".course_notification").each(function(index) {
             var div = $(this);
             var id = $(this).attr("id");       
@@ -57,9 +59,9 @@ $(function() {
                 }
             });
         });
-});
-
-</script>';
+    });
+    </script>';
+}
 
 /*
     Header