Layout template does not use RazorViewFormatter siteRootPath

[mattbrailsford]

If you set the siteRootPath on the RazoeViewFormatter, and you have a view with a layout set such as

@{
    Layout = "_layout.cshtml";
}

Then the layout doesn't get found as the template engine tries to look in the application directory, rather than the relative directory of where the rendering view is located.