fix: Improve rights management exception handling

- Add fallback permission object when Permission.DoesNotExist
- Create proper display name from field_name for missing permissions
- Prevents raw Django field objects from being displayed in template

app/static.backup.20251005_204518/README.md

@@ -0,0 +1,11 @@
+# Static Files Directory
+
+This directory contains static files for the Django application.
+
+## Structure:
+- `css/` - Custom CSS files
+- `js/` - Custom JavaScript files  
+- `img/` - Image assets
+- `fonts/` - Font files
+
+Static files are collected to `staticfiles/` directory during deployment via `python manage.py collectstatic`.