Fix: Add migrations for Pin

core/migrations/0003_auto_20190222_1358.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-02-22 13:58
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0002_pin_referer'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='pin',
+            name='origin',
+            field=models.URLField(blank=True, null=True),
+        ),
+        migrations.AlterField(
+            model_name='pin',
+            name='referer',
+            field=models.URLField(blank=True, null=True),
+        ),
+        migrations.AlterField(
+            model_name='pin',
+            name='url',
+            field=models.URLField(blank=True, null=True),
+        ),
+    ]