Added donor response class

ref #65

src/models/responses/ResponseDonor.ts

@@ -0,0 +1,26 @@
+import {
+    IsBoolean
+} from "class-validator";
+import { Donor } from '../entities/Donor';
+import { ResponseParticipant } from './ResponseParticipant';
+
+/**
+ * Defines the donor response.
+*/
+export class ResponseDonor extends ResponseParticipant {
+
+    /**
+     * Does this donor need a receipt?
+     */
+    @IsBoolean()
+    receiptNeeded: boolean;
+
+    /**
+     * Creates a ResponseRunner object from a runner.
+     * @param runner The user the response shall be build for.
+     */
+    public constructor(donor: Donor) {
+        super(donor);
+        this.receiptNeeded = donor.receiptNeeded;
+    }
+}