Made migration so that this actually works

website/events/migrations/0017_auto_20170524_2046.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2017-05-24 18:46
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0016_event_category'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='event',
+            name='fine',
+            field=models.DecimalField(decimal_places=2, default=0, help_text='Fine if participant does not show up (at least €5).', max_digits=5, validators=[django.core.validators.MinValueValidator(0)], verbose_name='fine'),
+        ),
+    ]