Add migration for PurpleMode migration to GenericSetting

Rather than SiteSetting

cdhweb/pages/migrations/0061_purplemode_to_genericsetting.py

@@ -0,0 +1,22 @@
+# Generated by Django 5.0.8 on 2024-09-03 00:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cdhpages', '0060_alter_contentpage_body_alter_homepage_body_and_more'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='purplemode',
+            name='site',
+        ),
+        migrations.AlterField(
+            model_name='purplemode',
+            name='purple_mode',
+            field=models.BooleanField(default=False, help_text='\n            This will turn the site purple by transforming\n            all shades of cyan on the site into shades of\n            purple\n        '),
+        ),
+    ]