Proper Request.flash support in Blammo/yar

[thegoleffect]

Right now, Passport uses a hacked version to simulate request.flash. A proper version should only take like 1-3 hours to implement when not under duress.

[hueniverse]

Open an issue on yar and close this one.

[thegoleffect]

https://github.com/walmartlabs/yar/issues/5