ViewComponents and Controllers now follow the same rules exactly for what
types of classes they can be.
Also corrected a bug in a test for controllers. Closed-generic types can
be controllers, the test was wrong.
This also comes with a rename of the namespace
Microsoft.AspNet.Mvc.ApplicationModel to
Microsoft.AspNet.Mvc.ApplicationModels.
Also tuned up some parameter and variable names for increased
understandability.