Feature: Add migrations for url and referer length

core/migrations/0009_auto_20200825_0800.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2.14 on 2020-08-25 08:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0008_board_private'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='pin',
+            name='referer',
+            field=models.CharField(blank=True, max_length=512, null=True),
+        ),
+        migrations.AlterField(
+            model_name='pin',
+            name='url',
+            field=models.CharField(blank=True, max_length=512, null=True),
+        ),
+    ]