Git commits in Moodle 3.5.6 by Michael Hawkins

commit e36f1c989670cc8fa2e322622cabad1a7fa5a831
Author: Michael Hawkins <michaelh@moodle.com>
Date:   Mon, 18 Mar 2019 15:23:59 +0800
Tag:    v3.5.6

MDL-61738 messageinbound: Fix quota checks & filesize for email uploads