Git commits in Moodle 3.4.2 by Kevin Wiliarty

commit a19ee0e707b0401a3983f36065637fe3075c00fb
Author: Kevin Wiliarty <kevin.wiliarty@gmail.com>
Date:   Wed, 10 Jan 2018 03:02:36 +0800
Tag:    v3.4.2

MDL-61175 mod_assign: roll grade-by reminder on restore