Business Layer; ISWebClient is obsolete; Replaced with ISHttpClient

The ISWebClient class in the business layer that is used for executing web request has been marked as obsolete. This is due to the underlying Microsoft class System.Net.WebClient being made obsolete.

There is a new ISHttpClient class in the business layer that uses the recommended System.Net.Http.HttpClient class for making web requests.

NOTE: Scripts will produce warnings if ISWebClient is used.