MVC's action result naming changes

[kichalla]

Following methods on the Controller base class have been renamed for the sake of consistency and making them less verbose.

HttpUnauthorized => Unauthorized
HttpNotFound(and its overloads) => NotFound
HttpBadRequest(and its overloads) => BadRequest

Following action result types have also been renamed. The Http prefix has been removed.

Microsoft.AspNetCore.Mvc.HttpUnauthorizedResult => Microsoft.AspNetCore.Mvc.UnauthorizedResult
Microsoft.AspNetCore.Mvc.HttpOkResult => Microsoft.AspNetCore.Mvc.OkResult
Microsoft.AspNetCore.Mvc.HttpOkObjectResult => Microsoft.AspNetCore.Mvc.OkObjectResult
Microsoft.AspNetCore.Mvc.HttpNotFoundResult => Microsoft.AspNetCore.Mvc.NotFoundResult
Microsoft.AspNetCore.Mvc.HttpNotFoundObjectResult => Microsoft.AspNetCore.Mvc.NotFoundObjectResult
Microsoft.AspNetCore.Mvc.HttpStatusCodeResult = > Microsoft.AspNetCore.Mvc.StatusCodeResult

[kichalla]

Please use the issue aspnet/Mvc#4118 for discussion