Git commits in Moodle 3.8.1 by Kiet.Chan

commit bec0808b18e2563cb710aa292db84747bba31be3
Author: Kiet.Chan <kietlyc2@gmail.com>
Date:   Wed, 11 Dec 2019 14:56:13 +0800
Tag:    v3.8.1

MDL-67417 theme_boost: Tooltip icon stop working after closing using ESC