Switch to using our own Schemas

[PeterDKC]

We're going to use our own DB schemas for Models instead of LegiScan schemas. In order to effect this, there's a few steps

[ ] Delete all the current Models
[ ] Create migrations for all of the Models (probably do one by one here)
[ ] New Model files to leverage those schemas
[ ] Create new Import steps to take the data from the LegiScan import and pipe it into the new tables using firstOrCreate()
[ ] Tests and such

Feature Branch: feature/5-switch-to-our-schema