BUG give precendence to $menu_icon config, so you are not forced to set $menu_icon_class to false as well for it to work
BUG give precendence to $menu_icon config, so you are not forced to set $menu_icon_class to false as well for it to work

silverstripe/silverstripe-admin,silverstripe/silverstripe-admin,silverstripe/silverstripe-admin