Git commits in Moodle 3.8.x by Davo Smith

commit 629699355c53776e0d7128092cae3b6814b9d71b
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Thu, 10 Oct 2019 23:28:08 +0800
Tag:    v3.8.0-beta

MDL-66017 block_myoverview: Oracle compatibility fix

commit 8d166d77451e7650f9f5695d56fb2b9f35570f1f
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Thu, 22 Aug 2019 23:10:34 +0800
Tag:    v3.8.0-beta

MDL-66017 block_myoverview: filter by custom course field

commit 07aafc9f806bba8d3bda870f0d64d67a4468a1ee
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Tue, 09 Jul 2019 16:01:44 +0800
Tag:    v3.8.0-beta

MDL-64811 mod_assign: add webservice return type change to upgrade.txt

commit 8773296b779abca66692845a074149f01bc074ed
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Mon, 01 Jul 2019 18:22:57 +0800
Tag:    v3.8.0-beta

MDL-64811 mod_assign: fix webservice return type

commit 74ddcaaa6fc37741bff18858ddf2f92d4a67587d
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Mon, 17 Jun 2019 22:30:47 +0800
Tag:    v3.8.0-beta

MDL-64811 mod_assign: warn about 'Default group' submissions