Substituted all instances of [MemberData("PropertyName")] for [MemberData(nameof(PropertyName))]
This change enables us to take advantage of IDE features like Navigate to source,
find all references, etc. When using Visual Studio.
* Introducing RazorPage and RazorPageOfT that represent the Razor
execution aspect of view execution. Moving view execution hierarchy behavior
(Layout, partial views etc) into a separate RazorView type.
* Renaming IVirtualPathViewFactory to IRazorPageFactory,
IRazorViewActivator to IRazorPageActivator
* Renaming VirtualPathViewFactor to FileBasedPageFactory to
correctly reflect what it does.
Fixes#814