Display the number of users in the sessions report (take II)

renderer.php

@@ -850,7 +850,7 @@ class mod_attendance_renderer extends plugin_renderer_base {
         }
         $table->data[] = $statrow;
         
-        return html_writer::table($table);
+        return html_writer::table($table).html_writer::tag('div',get_string('users').': '.count($reportdata->users));;
     }
 
     protected function render_attendance_preferences_data(attendance_preferences_data $prefdata) {