Git commits in Moodle 3.6.x by Benjamin Wolf

commit c19ef03f719ca4b381ef3d9a5c34aafe0910d17d
Author: Benjamin Wolf <benjamin.wolf@eledia.de>
Date:   Fri, 20 Apr 2018 19:15:15 +0800
Tag:    v3.6.0-beta

MDL-56093 auth_db: Save custom profile fields in auth_db