Big Chunk of updates on way to making the sales portion working

bookie/src/app/core/device.ts

@@ -0,0 +1,7 @@
+import {Section} from "./section";
+
+export class Device {
+  id: string;
+  name: string;
+  section: Section;
+}

bookie/src/app/core/modifier-category.ts

@@ -1,9 +1,12 @@
 import {MenuCategory} from "./menu-category";
+import {Modifier} from "./modifier";
 
 export class ModifierCategory {
   id: string;
   name: string;
   minimum: number;
   maximum: number;
-  menuCategories: MenuCategory[];
+  isActive: boolean;
+  menuCategories?: MenuCategory[];
+  modifiers?: Modifier[];
 }

bookie/src/app/core/modifier.ts

@@ -6,4 +6,5 @@ export class Modifier {
   showInBill: boolean;
   price: number;
   modifierCategory: ModifierCategory;
+  isActive: boolean;
 }