Label in table header if first iteration non-relevant, fix #2783
Label in table header if first iteration non-relevant, fix #2783

orbeon/orbeon-forms,brunobuzzi/orbeon-forms,brunobuzzi/orbeon-forms,orbeon/orbeon-forms,brunobuzzi/orbeon-forms,orbeon/orbeon-forms,orbeon/orbeon-forms,brunobuzzi/orbeon-forms