Git commits in Moodle 3.8.3 by Helen Foster

commit 53611ca744ec5803e023af0657b180e0bd0cf9b7
Author: Helen Foster <helen@moodle.org>
Date:   Tue, 28 Apr 2020 21:35:48 +0800
Tag:    v3.8.3

MDL-68434 lang: Import fixed English strings (en_fix)