Disable setting custom parameters of None or boolean type in web UI. Fixes #1870
Disable setting custom parameters of None or boolean type in web UI. Fixes #1870

mbeacom/locust,locustio/locust,mbeacom/locust,locustio/locust,mbeacom/locust,locustio/locust,locustio/locust,mbeacom/locust