Collective-smsauthenticator

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- Fix: CL adduser fails due to plone.api, but adduser adds as a Zope account,
which doesn't need the twofactor properties. We shortcut the subscriber if
it's a Zope account being added. See plone.api docs for issue with 'scripts':
http://docs.plone.org/external/plone.api/docs/api/exceptions.htmlplone.api.exc.CannotGetPortalError
[puittenbroek]

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- Use source_users IAutheticationPlugin for password check to prevent
recursive loop [puittenbroek]
- Better return values, we always return None in our pas plugin [puittenbroek]
- Add 'enableAutoFocus' forms to enable auto focus [puittenbroek]

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- Direct user to a 'reset email sent' page instead of loginfom [puittenbroek]
- Improve/change some help texts [puittenbroek]

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- Improved help texts. [barseghyanartur]

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- Adding admin helper views for viewing IPs that users have been using when logging in.
[barseghyanartur]

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- Increasing number of chars in the SMS token from 6 to 8. [barseghyanartur]