Git commits in Moodle 3.7.5 by Bas Brands

commit 720a26266a612adf139004a5ca71bd6e4ac5011c
Author: Bas Brands <bas@moodle.com>
Date:   Mon, 24 Feb 2020 21:39:31 +0800
Tag:    v3.7.5

MDL-67863 theme_boost: change keyboard tab order

commit f18444a5d1487c368cf62b81bb8b75e57070aeec
Author: Bas Brands <bas@moodle.com>
Date:   Mon, 27 Jan 2020 19:14:16 +0800
Tag:    v3.7.5

MDL-67577 core_message: navbar_output order

commit 089100fdb33e5064de41f19235b0b71e8441847c
Author: Bas Brands <bas@moodle.com>
Date:   Mon, 13 Jan 2020 16:12:47 +0800
Tag:    v3.7.5

MDL-67472 theme_boost: configurable sass variable for drawer bgcolour

commit 3dd509b06bc729d2e824e25e8cb8a743e1f292c9
Author: Bas Brands <bas@moodle.com>
Date:   Tue, 03 Dec 2019 23:18:04 +0800
Tag:    v3.7.5

MDL-66721 core_chooser: height correction for chooser modal

commit d4f03eb0b1b6cd84105da3261cefc8bff2519d44
Author: Bas Brands <bas@moodle.com>
Date:   Mon, 24 Jun 2019 22:42:24 +0800
Tag:    v3.7.5

MDL-65106 theme_classic: set custom navigationitem icon