Git commits in Moodle 3.7.x by Mikhail Golenkov

commit b3e0d3edeca07257eb81abe21bc4dc4bcb36dd25
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Thu, 09 Jan 2020 11:49:38 +0800
Tag:    v3.7.4

MDL-67485 task: Release the task runner lock before throwing exception.

commit 0b40ec7c6cb196aebee12a23a6805171253b852f
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Tue, 26 Nov 2019 09:11:00 +0800
Tag:    v3.7.4

MDL-56886 navigation: Allow local plugins to modify navigation via AJAX.

commit 8dc826354d92e066b98fe6669f313425e840b85e
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 21 Oct 2019 14:48:45 +0800
Tag:    v3.7.3

MDL-66973 search: Reset Content writer after test.

commit bf61d3f2b733546848c48286eb76f453422a46fc
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 07 Oct 2019 13:28:16 +0800
Tag:    v3.7.3

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

commit c2ba01fe9e4d9df3e72218b66fc630adfad5b6f0
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 30 Sep 2019 09:12:33 +0800
Tag:    v3.7.3

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