Confirmation fixes

This includes the confirm email fix, a placeholder page where newly confirmed users are sent to, and the two plans for the front page that we'll decide on one for sure today.
On Fri, Jun 20, 2014 at 09:49:44AM -0700, Brian Grayless wrote:
> Do we even need the index action at this point? If we are not showing the list of assignments until a user logs in, it seems pointless.

Something is needed for the case when a user manually goes to the root
URL in their browser. I also like the idea of having a centralized point
of redirect dispatching here because it will make it easier to add different
kinds of dashboards for different users when we do that.