Add Missing Integration Tests for existing React code for BFF

[jgreben]

Basic tests to ensure that aggregate components get rendered with expected data Per #115, use Puppeteer.

(e.g. we load a resource template in the editor, and the Editor, ResourceTemplate, PropertyWrapper, Property, PropertyValueConstraint components (etc) all have data from the selected resource template)

e.g.

• [ ] Editor page has sinopia header
• [ ] Editor page has sinopia footer future
• [ ] clicking in starting points menu brings up appropriate resource template form
• [ ] resource template form has appropriate fields and buttons
• [ ] modal form with lookup does the right thing
• [ ] modal form shows text fields appropriately etc. ?

Perhaps similar to our list of original integration tests for the BFE?

[justinlittman]

Closing in favor of more specific testing tickets.