add extra css class migration to match combo

combo_plugin_subscriptions/migrations/0004_subscriptionsmanagecell_extra_css_class.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('combo_plugin_subscriptions', '0003_subscriptionsmanagecell_restricted_to_unlogged'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='subscriptionsmanagecell',
+            name='extra_css_class',
+            field=models.CharField(max_length=100, verbose_name='Extra classes for CSS styling', blank=True),
+        ),
+    ]