Git commits in Moodle 3.1.4 by Brendan Heywood

commit a900b899b5d31b0e31a4572ae76d2c54a74d75a7
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Mon, 14 Nov 2016 19:00:55 +0800
Tag:    v3.1.4

MDL-52199 core_message: IMAP errors passed to task api