More optimization and re-organization
Add new models for data
Updates to witness processing api
Activate codex view
Updates to main view
Update display of witnesses
Update witness model
New person model
Activate new models in app framework
New management command for fetching witnesses
Update get_ismi_ids management script
Lots of fixes

Integrated DRF, query sets, moved template system over to DRF/JSON/HTML, updated the management commands, etc. etc. etc.