Git commits in Moodle 3.2.4 by Mary Evans

commit 8ac3e5ea59c30e4221fba8fa7f9d5d5a734299ad
Author: Mary Evans <lazydaisy@visible-expression.co.uk>
Date:   Mon, 29 May 2017 17:18:53 +0800
Tag:    v3.2.4

MDL-59080 theme_boost: make drawer.scss variables default