Small fixes and updates

backend/right_tree/api/migrations/0016_alter_activationkey_key_set.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.17 on 2023-03-29 03:36
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0015_auto_20230306_1620'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='activationkey',
+            name='key_set',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='api.activationkeyset'),
+        ),
+    ]