Added list filter sticky option (only for django >= 3.1.2).

admin_interface/migrations/0018_theme_list_filter_sticky.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('admin_interface', '0017_change_list_filter_dropdown'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='theme',
+            name='list_filter_sticky',
+            field=models.BooleanField(default=True, verbose_name='sticky position'),
+        ),
+    ]