[CHANGE] Drop that users have to confirm their e-mail address.

The e-mail address is used just as a log-in name (and for password
recovery), but not for any other actions. Thus, forcing the user
to confirm it via an e-mail seems overkill.
Merge pull request #41 from braingourmets/task/not-confirmable

[CHANGE] Drop that users have to confirm their e-mail address.