alphagov/signonotron2 — pull request #218 by alext (2014-03-26 13:55:46+00:00)
Title: Handle blank user email without blowing up.

Some of the validations were blowing up when email was nil.

There was also an issue in devise_zxcvbn[1] relating to a nil email that was fixed in version 1.1.1

[1] bitzesty/devise_zxcvbn#5