Add missing migration

journals/migrations/0024_auto_20180310_1740.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2018-03-10 16:40
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('journals', '0023_journal_structure'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='issue',
+            options={'ordering': ('-until_date',)},
+        ),
+        migrations.AlterModelOptions(
+            name='publication',
+            options={'ordering': ('-publication_date', '-paper_nr')},
+        ),
+        migrations.AlterField(
+            model_name='issue',
+            name='in_journal',
+            field=models.ForeignKey(blank=True, help_text='Assign either an Volume or Journal to the Issue', null=True, on_delete=django.db.models.deletion.PROTECT, related_name='issues', to='journals.Journal'),
+        ),
+        migrations.AlterField(
+            model_name='issue',
+            name='in_volume',
+            field=models.ForeignKey(blank=True, help_text='Assign either an Volume or Journal to the Issue', null=True, on_delete=django.db.models.deletion.PROTECT, related_name='issues', to='journals.Volume'),
+        ),
+        migrations.AlterField(
+            model_name='journal',
+            name='structure',
+            field=models.CharField(choices=[('IV', 'Issues and Volumes'), ('IP', 'Individual Publications')], default='IV', max_length=2),
+        ),
+        migrations.AlterField(
+            model_name='publication',
+            name='doi_label',
+            field=models.CharField(db_index=True, max_length=200, unique=True, validators=[django.core.validators.RegexValidator('^[a-zA-Z]+.[0-9]+(.[0-9]+.[0-9]{3,})?$', 'Only valid DOI expressions are allowed (`[a-zA-Z]+.[0-9]+.[0-9]+.[0-9]{3,}` or `[a-zA-Z]+.[0-9]+`)')]),
+        ),
+        migrations.AlterField(
+            model_name='volume',
+            name='in_journal',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='volumes', to='journals.Journal'),
+        ),
+    ]