Frends.HTTP.Request json/string handling

The Frends.HTTP.Request task will throw an error if it is set to return JToken and the response is not json. This happens usually if an error/fail occurs in the server. Now, this causes processes to crash. It would be better, that if the Jtoken can not be created the response will be an empty json and the actual string would be in a different value. Usually the request status code is read for flow, so then the process would still work for non 2xx returns (like too many request. Of course, the workaround is to return string and then convert it to json, but that sounds a bit unnecessary. The really nifty thing would be, if the task would read the respones header for content-type and would return json or text according to that.