Add encoded values for cookies

Update repo to use ripple2.
Update packages to latest fubu nugets.
Add url encoding to the AntiForgery cookies so that they get encoded/decoded
properly when trying to check them.
Add tests for encoding and decoding cookies

Test that when the cookie is set by the AntiForgery bottle, the cookie
value will be URL encoded.
Test that when the cookie is deserialized, the cookie value is
deserialized using the HttpUtility.UrlDecode.
Merge pull request #2 from jrios/encodeCookieValues

Encode cookie values