Git merges in Moodle 3.5.9 by Jun Pataleta

commit 454af7cf524454e2a78eb1c1514f94268d0bb5ce
Author: Jun Pataleta <jun@moodle.com>
Date:   Tue, 15 Oct 2019 07:35:57 +0800
Tag:    v3.5.9

Merge branch 'MDL-66821_35' of https://github.com/timhunt/moodle into MOODLE_35_STABLE


commit df6f010a86b44809149bba7f8614792f8263ee63
Author: Jun Pataleta <jun@moodle.com>
Date:   Wed, 09 Oct 2019 20:44:17 +0800
Tag:    v3.5.9

Merge branch 'MDL-66835_35' of https://github.com/timhunt/moodle into MOODLE_35_STABLE


commit f904215fa71b309ab465b2fba5f38a413ca57601
Author: Jun Pataleta <jun@moodle.com>
Date:   Fri, 27 Sep 2019 11:12:15 +0800
Tag:    v3.5.9

Merge branch 'install_35_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_35_STABLE


commit 635b605eabf025889be1c9beefa943cf453e50d2
Author: Jun Pataleta <jun@moodle.com>
Date:   Thu, 26 Sep 2019 11:34:26 +0800
Tag:    v3.5.9

Merge branch 'MDL-66262_35' of git://github.com/stronk7/moodle into MOODLE_35_STABLE