Validate URLs before adding

feeds/migrations/0003_blocklist_active.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.1 on 2024-01-30 16:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('feeds', '0002_blocklist'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='blocklist',
+            name='active',
+            field=models.BooleanField(default=True, help_text='Is this URL still blocked?'),
+        ),
+    ]