Reset password

Fixed issue #10 
This `@user` loading and `@user.blank?` check is repeated twice.  It should be pulled out into a `before_action :load_user` that is called before both the edit and update actions.  Within the `load_user` method, redirecting will work.  So, you could redirect to root with the message of "Your password reset link is not active.  Please try resetting your password again"