Payments and Addresses add- and removeable

software/src/data/models/addressModel.ts

@@ -1,6 +1,6 @@
 export class AddressModel {
   street: string = ""
-  houseNumber: number = 0
-  postalCode: number = 0
+  houseNumber: number
+  postalCode: number
   city: string = ""
 }