Git commits in Moodle 2.8.7 by Helen Foster

commit d1d1d24396548dad461d1b2b13e606bdb8adebcb
Author: Helen Foster <helen@moodle.org>
Date:   Fri, 19 Jun 2015 18:15:24 +0800
Tag:    v2.8.7

MDL-50622 lang: Merge English strings from the en_fix language pack