Allow Suppression of Jetty Version Information in HTTP Responses

[ab-20-m]

It is considered bad practice to include information in HTTP responses that allow fingerprinting of the Server version/information. As of Mirth 3.9.1, auto-generated HTTP Responses include Jetty Version information in the "Server" HTTP Header. Mirth should provide a capability to disable/suppress Jetty Version information in HTTP Reponses on a per-channel basis.

[rbergeron-psi]

What we need is:

1. Don’t send the Server header in the HTTP Response. Need to configure the HttpConfiguration before starting the Jetty server for HttpReceivers. java - Remove the HTTP Server header in Jetty 9 - Stack Overflow
2. Don’t send stack exception details in the HTTP response when there are errors. ~Line 524 – Line 533 in HttpReceiver.java Logging the details is one thing, blasting the details in the response out is another.