MVVM documentation.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41939
Fix namespace.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41940
Remove New Level Window.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41941