Git commits in Moodle 3.6.2 by Christian Wolters

commit 26640d3831bbcb53709c4cc61ec38f8cef2d3634
Author: Christian Wolters <christian.wolters@uni-luebeck.de>
Date:   Sun, 16 Dec 2018 22:48:12 +0800
Tag:    v3.6.2

MDL-64025 admin_bookmarks: Enable bookmarking of admin categories