Git commits in Moodle 3.8.2 by Huong Nguyen

commit fcf3d8b748ac1c8675052ed408ff9cd92866662e
Author: Huong Nguyen <huongnv13@gmail.com>
Date:   Wed, 12 Feb 2020 16:45:04 +0800
Tag:    v3.8.2

MDL-67942 Quiz: Quiz attempt report delete_selected_attempts issue