Remove duplicate code.
Add default styles for ViewModelViewHost and RoutedViewHost.
We added xaml so NuGet needs this files.
Fix some tests.
Copy matching files and fix WinRT.
Always be style keying.
Remove crazy WPA81 stuff.
Merge pull request #639 from reactiveui/fix-xamlmetadataprovider

Fix XamlReader.Load() by making sure xaml metadata is included.