Git commits in Moodle 3.4.6 by Mark Nelson

commit ba27222184637398e0baf17e53b60c1f368e000a
Author: Mark Nelson <markn@moodle.com>
Date:   Mon, 05 Nov 2018 10:35:51 +0800
Tag:    v3.4.6

MDL-63839 core_message: use component name for Behat tag