Add missing migration file (Volume ordering)

journals/migrations/0026_auto_20180327_1937.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2018-03-27 17:37
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('journals', '0025_auto_20180314_1637'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='volume',
+            options={'ordering': ('-until_date',)},
+        ),
+    ]