Git commits in Moodle 3.7.4 by Amaia Anabitarte

commit ba2599ce0594562bbafc424991a587007514779c
Author: Amaia Anabitarte <amaia@moodle.com>
Date:   Wed, 03 Jul 2019 20:43:29 +0800
Tag:    v3.7.4

MDL-65620 core_message: Default notification preferences


commit a4af12139e398f0835c2e7fec722cb362ff3d105
Author: Amaia Anabitarte <amaia@moodle.com>
Date:   Thu, 25 Apr 2019 21:39:28 +0800
Tag:    v3.7.4

MDL-65620 core_message: User preference generator


commit 610fde313f7171a643e13a87f564459b316db7a7
Author: Amaia Anabitarte <amaia@moodle.com>
Date:   Thu, 25 Apr 2019 21:38:59 +0800
Tag:    v3.7.4

MDL-65620 core_message: Notification preferences behat tests