Handle breaking changes in mod-orders

Changes:
1. Interface orders 8.0 is divided into:

• orders: 9.0: /orders/composite-orders – GET, POST; /orders/composite-orders/id – GET, PUT, DELETE
• order-lines: 1.0: /orders/order-lines – GET, POST; /orders/order-lines/id – GET, PUT, DELETE
• po-number: 1.0: /orders/po-number – GET; /orders/po-number/validate – POST
• receiving: 1.0: /orders/receive, /orders/check-in – POST; /orders/receiving-history – GET
• pieces: 1.0 /orders/pieces – POST; /orders/pieces/id – PUT, DELETE

2. compositePoLine.title/poLine.title are renamed to compositePoLine.titleOrPackage/poLine.titleOrPackage
3. new boolean field isPackage is added to compositePoLine and poLine schemas with default value – false
4. poLine.instanceId removed