List machines in the machine view.
Lint fixes.
Merge pull request #222 from kadams54/mv-list

To QA:

You'll need to use the `/:flags:/il/mv/` feature flags. The machine view will come up in an empty state. Deploy a charm and verify that the machine view has been updated appropriately, both in the list and in the header ("X machines"). Destroy the service and verify that the list still looks good.