Add optional help_text to Question objects. Closes #574. (#579)

src/pretix/base/migrations/0071_auto_20170729_1616.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.3 on 2017-07-29 16:16
+from __future__ import unicode_literals
+
+import i18nfield.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0070_auto_20170719_0910'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='question',
+            name='help_text',
+            field=i18nfield.fields.I18nTextField(blank=True, help_text='If the question needs to be explained or clarified, do it here!', null=True, verbose_name='Help text'),
+        ),
+        migrations.AlterField(
+            model_name='invoiceaddress',
+            name='vat_id',
+            field=models.CharField(blank=True, help_text='Only for business customers within the EU.', max_length=255, verbose_name='VAT ID'),
+        ),
+    ]