R1:a235768d586e

Modernize "Test Console" and fix a minor display bug with "Always"

Summary:
- Use the box view in the test console.
- Let the test console load tasks and mocks. We should move this to the adapters (`canAdaptObject($object)` or something).
- Fix a minor issue with "Always": hiding the whole cell could make the table layout weird in Safari, at least. Just hide the select instead.

Test Plan:
- Used test console on task.
- Used test console on mock.
- Created (silly) rule with "Always" and also…