Git commits in Moodle 3.7.4 by Helen Foster

commit b42864b0445ed6356ce66b24e231945a71884ad8
Author: Helen Foster <helen@moodle.org>
Date:   Wed, 18 Dec 2019 16:28:45 +0800
Tag:    v3.7.4

MDL-67527 lang: Import fixed English strings (en_fix)