Git commits in Moodle 3.2.3 by Mark Nelson

commit 86cbb2c450bd31da65c1664c93218bea0c4c3abd
Author: Mark Nelson <markn@moodle.com>
Date:   Mon, 01 May 2017 13:12:47 +0800
Tag:    v3.2.3

MDL-58650 core_message: always use 'popup' processor for messages