Receive payment working.

TODO: Nested subscribe in Receive Payment in sales-home-component.ts should be refactored into something more readable.

bookie/src/app/sales/bills/voucher.service.ts

@@ -75,4 +75,12 @@ export class VoucherService {
       return this.update(voucher, printType, guest_book_id, updateTable);
     }
   }
+
+  receivePayment(id: string, amounts: { id: string; name: string; amount: number }[], updateTable: boolean): Observable<Bill> {
+  const options = {params: new HttpParams().set('r', "").set('u', updateTable.toString())};
+  return <Observable<Bill>>this.http.post<Bill>(`${url}/${id}`, amounts, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'receivePayment'))
+      );
+  }
 }