Git commits in Moodle 3.5.3 by Nathan Nguyen

commit 107a70c18c91b66af58a4dc75eab7f01d91db2a6
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Mon, 20 Aug 2018 10:56:34 +0800
Tag:    v3.5.3

MDL-62319 Assign: Grading interface is broken when using iOS 11.3 devices