Moved all the schemas into their own logical files.

overlord/src/app/core/product.ts

@@ -1,4 +1,3 @@
-import { Account } from './account';
 import { ProductGroup } from './product-group';
 
 export class Product {
@@ -15,8 +14,7 @@ export class Product {
   isFixture: boolean;
   isPurchased: boolean;
   isSold: boolean;
-  productGroup: ProductGroup;
-  account: Account;
+  productGroup?: ProductGroup;
 
   public constructor(init?: Partial<Product>) {
     this.code = 0;
@@ -31,8 +29,6 @@ export class Product {
     this.isFixture = false;
     this.isPurchased = true;
     this.isSold = false;
-    this.productGroup = new ProductGroup();
-    this.account = new Account();
     Object.assign(this, init);
   }
 }