Git commits in Moodle 3.9.0 by Michael Milette

commit 17cc4735d7792f9a0e050029b2ccb8240d448b8b
Author: Michael Milette <michael.milette@tngconsulting.ca>
Date:   Tue, 19 May 2020 12:50:41 +0800
Tag:    v3.9.0-beta

MDL-68765 auth: Login form has DIV tag with 2 CLASS attributes.

commit 8056397b7eb91d373af178717a0a5596ddb7057a
Author: Michael Milette <michael.milette@tngconsulting.ca>
Date:   Wed, 12 Feb 2020 23:37:25 +0800
Tag:    v3.9.0-beta

MDL-66849 output: Remove custom menu title when not specified

commit a75fe2f1b5a438848eedb4c64efc16ef7bd2add9
Author: Michael Milette <michael.milette@tngconsulting.ca>
Date:   Tue, 14 Jan 2020 05:19:31 +0800
Tag:    v3.9.0-beta

MDL-66858 master: Enable <header> tags in Atto editor.