allow user css

main.py

@@ -34,12 +34,12 @@ config = Config()
     config.registration_enabled,
     config.login_required
 ) = db.get_config()
+config.user_css = os.path.exists(os.path.join(app.static_folder, 'user.css'))
 
 if config.version != VERSION:
     print(f"Incompatible version {config.version} (expected {VERSION})")
     sys.exit(1)
 
-
 class Role:
     USER = 0
     MODERATOR = 1