Git commits in Moodle 3.7.4 by Didier 'OdyX' Raboud

commit b7540acee3cfdf76610b245bb38fc488b4419bb8
Author: Didier 'OdyX' Raboud <didier.raboud@liip.ch>
Date:   Tue, 10 Dec 2019 23:33:59 +0800
Tag:    v3.7.4

MDL-67491 core_message: Primary'fy the contact request counts