Remove the msbuild based nuget package restore in favor of visual studio based package restore

Descibed here http://docs.nuget.org/docs/workflows/migrating-to-automatic-package-restore
Change redis library from servicestack to booksleeve due to new unfriendly license

Booksleeve asks for Redis DB on each operation instead of it being part of the the connection
Booksleeve has a much cleaner transaction api