Refactor out all deprecated DNN calls and add dependency injection

[sawest]

I have started version 8.0.0 and have most of the code refactored for this. However, I have been unable to figure out how to code the AuthenticationModule that implements iHTTPModule. This module fires up before the DNN startup and no services are available at the time. This class utilizes other controllers in the project that will not be able to be called once DI is implemented.