If VHOST exists, don't use the raw URL with port

If the VHOST file exists, don't overwrite the $APP/URL file, such that, when the app is building the VHOST'd URL is output in the terminal, instead of the $HOSTNAME/:$port version.

Most documentation references the idea of apps being released as subdomains (Heroku type subdomains), this would alleviate some of the confusion of seeing a port based URL.