Changes to fix the recent WP8 tile additions

1. Added nuget restore to the project so it will build outright on a
fresh pull
2. All three new tiles had been given the template "FlipTile",
corrected.
3. Nearly all three new tiles' xml wasn't being created because it was
just checking whether the Title property had a value, rather than the
correct property
4. New tiles were missing the TileId property