#348 created UI for waitlist view, and corresponding url.

Created RegistrationWaitlistView and routed it with corresponding url '/register/waitlist' . Doesn't redirect in RegistrationView but I think that's a separate task
![screen shot 2014-10-29 at 9 29 08 pm](https://cloud.githubusercontent.com/assets/5726560/4838619/560caace-5fed-11e4-9cc0-618f153d64ae.png)

You need to exit from this function early, otherwise both `navigate`s will be called. Either add a `return;` here, or move the other `navigate` into an `else` block.