Git commits in Moodle 3.9.0 by Kiet.Chan

commit ed561c801eae97f8c690989c5398e8dfd51f2164
Author: Kiet.Chan <kietlyc2@gmail.com>
Date:   Fri, 27 Dec 2019 10:53:31 +0800
Tag:    v3.9.0-beta

MDL-67583 themes: Popover placement should react to scroll event


commit aa8a719049177422313bf0ffd86afaf2c7197dd5
Author: Kiet.Chan <kietlyc2@gmail.com>
Date:   Wed, 11 Dec 2019 14:56:13 +0800
Tag:    v3.9.0-beta

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