Get tax year from transaction date

Client/src/app/components/add-transaction-page/add-transaction-page.component.ts

@@ -76,6 +76,7 @@ export class AddTransactionPageComponent implements OnInit {
           contrib.transactions = [];
           this.contributions.push(contrib);
         }
+        res.transaction.taxYear = +res.transaction.date.split('-')[0];
         contrib.transactions.push(res.transaction);
         if (res.saveAndAdd === true) {
           this.addTransaction(contrib.contributorId);