Use Workbench

[tonysm]

I think the tests can be cleaned up quite a lot with Workbench: https://github.com/orchestral/workbench

This lets us set up a Laravel app in a workbench/ folder and start the Laravel app. I want to explore that.

Things to explore:

• Can we run our integration tests with things defined in this workbench/ folder? Probably yes
• Can we define routes, controllers, models, and stuff to run Dusk tests against this workbench/ Laravel app?