Git commits in Moodle 3.7.x by Tien Nguyen Phuc

commit 68e85534a83036d92534fd5c1b9a6d9084c898d7
Author: Tien Nguyen Phuc <nguyenphuctien@gmail.com>
Date:   Wed, 08 Jan 2020 16:31:46 +0800
Tag:    v3.7.5

MDL-67638 Course: update course timemodified on bulk category move