Git commits in Moodle 3.5.x by Jesse Ritchey

commit c91a59ac4220c17673ca68280901f60926cbfc12
Author: Jesse Ritchey <jesse.ritchey@gmail.com>
Date:   Wed, 07 Mar 2018 18:08:13 +0800
Tag:    v3.5.0-beta

MDL-60445 theme_boost: remove fieldset tag