Git commits in Moodle 3.8.2 by Andrew Zito

commit b7fe18eb8b1b0f7e1c8a072da488622eef354071
Author: Andrew Zito <zitoa@lafayette.edu>
Date:   Tue, 12 Feb 2019 03:48:14 +0800
Tag:    v3.8.2

MDL-63316 participants: lastname sort for participants table