Git commits in Moodle 3.5.2 by Helen Foster

commit f4bd5f5e1ad0f1dd27a1d384cb4cecc52d113bc8
Author: Helen Foster <helen@moodle.org>
Date:   Tue, 04 Sep 2018 21:12:17 +0800
Tag:    v3.5.2

MDL-63249 lang: Merge English strings from the en_fix language pack