The Ballad of Front-end and Back-end (or added initial draft of the flow with backend support)

@codesliced Adding the backend connected flow for review. Here are some notes:

- Added backend connected flows, with `enrollment_start` starting the flow and the `enrollment` controller starting a Wicked (gem) flow from there.
- This is still really rough, definitely has bugs, needs word-smithing, code cleanup and all around improvements. However, it gets us to a place where more things are dynamic and showable with high-fidelity prototype-like expectations.
- The guardian contact flows and contact person flows are just skeletons right now, with those not being connected to the backend. The guardian ones are filled in enough for showing to stakeholders if we need to, but definitely need to be word-smithed.
- Used the wording from the [T2R Mad Libs](https://docs.google.com/a/codeforamerica.org/document/edit?id=1Bo0iAP49R0TMBfOu597tXNLdRh3hucb1k4ZhmqvygpE#heading=h.yzfhedkpj8ap), but we can modify to use the wording that was in the `/pages` flows (I just noticed they were different too late).
- The SASS files can be reinstated after this merge. As you mentioned, it'd be great, especially for the colors.
- We'll have to figure out how to get the flow for `contact_person` to loop for X number of contacts, such that the guardian can fill in as many as they desire.

Let me know if there are any questions about where things moved or how some of the areas are working.