Add ingest and embargo date columns to batches table.
Add "human-readable" translations of db fields for Grant table.
Factor out Organization from Grants into Projects
Add Projects model and link Projects to Grants.
Add human-readable translations for grants' attribs.
Create Home page with links to each model.
Modify models/schema for Grant/Batch relationship.
Modify form/displays to support entering/displaying related Grant. Human-readabled fields.