Revert port change

Author: pamelafox

app/start.sh

@@ -41,7 +41,7 @@ echo ""
 
 cd ../backend
 
-port=50509
+port=50505
 host=localhost
 ../../.venv/bin/python -m quart --app main:app run --port "$port" --host "$host" --reload
 if [ $? -ne 0 ]; then