add missing migration

src/c3nav/site/migrations/0005_siteupdate_default_related_name.py

@@ -0,0 +1,17 @@
+# Generated by Django 2.1.4 on 2018-12-10 22:34
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('site', '0004_siteupdate_tweaks'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='siteupdate',
+            options={'default_related_name': 'siteupdates', 'get_latest_by': 'created', 'verbose_name': 'Site update', 'verbose_name_plural': 'Site updates'},
+        ),
+    ]