Micha Ahrweiler

Add missing properties for TradeSettlementLineMonetarySummation which are used only in zugferd 2.3 extended profile.

The `SpecifiedLegalOrganization` element was generated in the wrong position when `\Easybill\ZUGFeRD2\Model\TradeParty::$specifiedLegalOrganization` is set. This caused the generated extended profile xml to be invalid.