Feature: grant navigation and detail view

[beechnut]

Background
We want to lay the minimal groundwork for the app, which involves listing grants, allowing some search, and showing grant details.

Do we want this issue to include things like table/list pagination, typeahead filtering, and/or a grant view page?

We'll know we're done when we have...

• A table of grants, sorted by most recently updated first
• Pagination on the grants table
• Grant "detail" view, listing all grant details in the database
• Links to navigate back to list
• Tests to cover grants list, initial ordering, grant view.

Tasks

• Set up tests
• Add initial sort to table from Set up USWDS #388
• Add pagination
• Set up grant detail view
• Set up navigation