Archive old migrations (#426)

* Archive old migrations

* Fix invalid placement of migrations

migrations/archive/000.459.sql

@@ -0,0 +1,6 @@
+ALTER TABLE orders
+    ADD COLUMN IF NOT EXISTS gdpr_removal TIMESTAMP WITH TIME ZONE;
+
+UPDATE orders
+    SET gdpr_removal = NOW()::timestamp
+    WHERE id IN (SELECT id FROM orders WHERE LOWER(comment::TEXT) LIKE '%gdpr%');