Order creation now requires User name
GetAllOrders operation now returns DeliveryDate as short date string
OrderItems creation now requires User name
Merge branch 'ClientAPI-User_identification'
Added missing NOT NULL constraints
Merge branch 'ClientAPI-db_fix'
Orders are now sent together with their owners
Fixed OrderItem and Payment entities
Order Status is now enum
Merge branch 'ClientAPI-GetAllOrders_with_Owners'