Add sales types, party adjustments, FunZone party fields, and treasury fee support

Co-authored-by: Cursor <cursoragent@cursor.com>

accounting/migrations/0005_treasury_source.py

@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0004_party_funzone_fields'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='treasurytxn',
+            name='source',
+            field=models.CharField(blank=True, default='', max_length=120),
+        ),
+    ]