"Every Little Thing" (or Updates to the Model to Support a Complete Registration)

@codesliced Ready for review

Did a review of the model layer and a reset on the seeds file (we can pull back the old seeds from revision history if needed). Changes support several things:

1. The data fields needed to support the picture of a guardian completed registration and a completely finished registration.
1. Fields needed for the current UI mockups of the admin screens
1. Fixes to existing models, where things were either missing or weren't related correctly