Git commits in Moodle 3.9.0 by Andrew Madden

commit 4a63a5b87573ea682b6fa81c9d6189214db36328
Author: Andrew Madden <andrew.madden@live.com.au>
Date:   Thu, 30 Jan 2020 07:50:59 +0800
Tag:    v3.9.0-beta

MDL-67351 quiz: Change advanced quiz settings types to use flags.

commit b5d1151574f9c1c837628b4884f00e8ab4ebac70
Author: Andrew Madden <andrew.madden@live.com.au>
Date:   Thu, 30 Jan 2020 07:50:01 +0800
Tag:    v3.9.0-beta

MDL-67351 quiz: Move quiz form defaults logic out of form.

commit 948a951a4e98558c21e84d9926db62b07b39997a
Author: Andrew Madden <andrew.madden@live.com.au>
Date:   Fri, 17 Jan 2020 12:01:35 +0800
Tag:    v3.9.0-beta

MDL-67351 admin: Create new 'required' admin flag setting.

commit e2c5d41a6bca359c8ef8aee14766c363d49da4fd
Author: Andrew Madden <andrew.madden@live.com.au>
Date:   Thu, 05 Dec 2019 13:24:48 +0800
Tag:    v3.9.0-beta

MDL-67432 quiz: Load all quiz subplugin settings from quiz settings.