Developer credits
Git commits in Moodle 3.6.x by Treu Quan
commit 30e1f5a02378ba334d9fccd5321970a2ad7da5c4 Author: Treu Quan <quanht2795@gmail.com> Date: Mon, 22 Jan 2018 14:24:52 +0800 Tag: v3.6.0-beta MDL-60207 javascript: close modal when user touch/click outside it