Fix missing migration

website/events/migrations/0024_auto_20180111_1039.py

+# Generated by Django 2.0.1 on 2018-01-11 09:39
+
+import datetime
+from django.db import migrations, models
+import django.db.models.deletion
+import django.db.models.query_utils
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0023_auto_20180108_1249'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='registration',
+            name='member',
+            field=models.ForeignKey(blank=True, limit_choices_to=django.db.models.query_utils.Q(('membership__until__isnull', True), ('membership__until__gt', datetime.date(2018, 1, 11)), _connector='OR'), null=True, on_delete=django.db.models.deletion.CASCADE, to='members.Member'),
+        ),
+    ]