Git commits in Moodle 3.5.5 by Helen Foster

commit bc2a000664509ccaca53f39f85c03d6031df2345
Author: Helen Foster <helen@moodle.org>
Date:   Fri, 01 Mar 2019 01:02:44 +0800
Tag:    v3.5.5

MDL-64943 lang: Import fixed English strings (en_fix)