Git commits in Moodle 3.9.x by Michael Milette

commit 754440d796b6b4c8aaaf4fa4f8762b006b067300
Author: Michael Milette <michael.milette@tngconsulting.ca>
Date:   Tue, 19 May 2020 13:06:41 +0800
Tag:    v3.9.3

MDL-68766 auth: Login form: 'Log in using...' should be h3, not h6

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 1ddaad70add6df4ab35b22b03dfb13802c9ee040
Author: Michael Milette <michael.milette@tngconsulting.ca>
Date:   Thu, 09 Apr 2020 01:28:24 +0800
Tag:    v3.9.4

MDL-68257 book: Fix display of table of contents in IE11.

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.