Git commits in Moodle 3.8.0 by Mikhail Golenkov

commit 17fed0d1ccf9a18849185e8c9fc893f2930e46ce
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 21 Oct 2019 14:55:30 +0800
Tag:    v3.8.0-beta

MDL-66973 search: Reset Content writer after test.


commit 9c7a5526bac9f3b3da8a4252af4f53c8cc1215f2
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 07 Oct 2019 13:32:20 +0800
Tag:    v3.8.0-beta

MDL-66864 upgrade: Delete non-mutual contacts in chunks.


commit 15136147ba36cd095b7a8e326ea4a5d84912f0e1
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 30 Sep 2019 08:56:04 +0800
Tag:    v3.8.0-beta

MDL-66794 core_customfield: Reset Course handler after unit tests run.


commit 1a159252405e85394d241922a5244309e9ad14f4
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Wed, 25 Sep 2019 09:07:13 +0800
Tag:    v3.8.0-beta

MDL-66304 files: Allow xsendfile support in alternative file system.