Git commits in Moodle 3.7.0 by Felice Candilio

commit c4ddf4061235e906b9af1b5463e6b7d95178e3c7
Author: Felice Candilio <felicemcc@gmail.com>
Date:   Thu, 31 Jan 2019 17:55:53 +0800
Tag:    v3.7.0-beta

 MDL-64649 amd: Removing underscores from icons in [Roles/Groups] forms