Re-add secrets to OrderPositions

src/pretix/base/migrations/0010_orderposition_secret.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.2 on 2016-03-03 17:13
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+import pretix.base.models.orders
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0009_auto_20160222_2002'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='orderposition',
+            name='secret',
+            field=models.CharField(default=pretix.base.models.orders.generate_position_secret, max_length=64),
+        ),
+    ]