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 some other conditions.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7220