#1666 Use tooltipType to title for button without icon_name
#1666 Use tooltipType to title for button without icon_name

lino-framework/lino,lsaffre/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino