Git commits in Moodle 3.5.3 by Jake Dallimore

commit 9477b1d56867a9f0b78b433aae73f1efecd1def4
Author: Jake Dallimore <jake@moodle.com>
Date:   Tue, 21 Aug 2018 17:28:30 +0800
Tag:    v3.5.3

MDL-60145 course: fix bug with group restictions button during mod edit