Added created_at field to reminders table. Added time remaining timestamp to reminders command. Added creation date timestamp to reminder activation message

backend/src/migrations/1578445483917-CreateReminderCreatedAtField.ts

@@ -0,0 +1,18 @@
+import {MigrationInterface, QueryRunner, TableColumn} from "typeorm";
+
+export class CreateReminderCreatedAtField1578445483917 implements MigrationInterface {
+
+    public async up(queryRunner: QueryRunner): Promise<any> {
+        await queryRunner.addColumn("reminders",
+            new TableColumn({
+                name: "created_at",
+                type: "datetime",
+                isNullable: false
+            }));
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<any> {
+        await queryRunner.dropColumn("reminders", "created_at");
+    }
+
+}