HTTP Response Content-Type parsing fail when no encoding

[mehlah]

Parsing an HTTP Response with a Content-Type=application/json should store the response type as application/json.

Instead, Response->type = text/html (default constructed value)

and, parsing a Content-Type=application/json;charset=utf-8 works perfectly.

[Ciaro]

On a sidenote: RequestTest::testType() only seems to pass on Apache webservers. It returns nothing ('' instead of 'html') on for example IIS and Nginx (probably all other webservers?).