Registration complete handling

Now logs in the user and redirects him to the index page when completing
the registration proces.
Password reset handling

Shows status page with info after the reset proces.
Resend verification email feature

Users that lost their verification email can now request a new one.
Moved encryption passphrase to web.config
Settings screen bugfixes

Je kan nu je settings aanpassen en het is niet langer verplicht om een
nieuw wachtwoord op te geven.