Email verification handler

[mattbalza]

Make flask-stormpath able to handle the email verification event so that site owners can customize experience (e.g. Verification Base URL) upon successful validation.

[rdegges]

We will definitely get this added for ya =)

[jcass77]

I've hacked something together at https://github.com/BarrusInvestments/stormpath-flask/tree/fix/45_missing_email_features do add the missing email verification features.

• enables email verification workflow
• don't allow unverified accounts to log in
• option to resend verification email
• samples of the various html templates (these have not been aligned with the standard Stormpath look and feel).

It doesn't have any tests so probably not fit for a pull request, but might help others get started on this themselves.

[mdeggies]

@rdegges Was this added yet? :) Can't find info about it in the docs