Git commits in Moodle 3.1.11 by Adrian Greeve

commit b4e05280c10baa28a5042f4dcce98e27f1c1725c
Author: Adrian Greeve <adrian@moodle.com>
Date:   Sat, 20 Jan 2018 10:56:18 +0800
Tag:    v3.1.11

MDL-61242 repository_equella: Add source key when sending the source.