demo signal buttons

backend.py

@@ -63,6 +63,7 @@ def create_app():
     app.add_route('/demo/map-by-what', demo, suffix='map_by_what')  # Handle map by event type page
     app.add_route('/demo/edit/{id}', demo, suffix='edit')  # Handle event editing page
     app.add_route('/demo/traffic', demo, suffix='traffic')  # Handle traffic jam reporting page
+    app.add_route('/demo/view-events', demo, suffix='view_events')  # Handle view saved events page
     
     logger.success("Application initialized successfully")
     return app