Audit planner polish

[mattroe]

Relevant issues:

• [x] https://github.com/votingworks/arlo/issues/1603
• [x] https://github.com/votingworks/arlo/issues/1605
• [ ] https://github.com/votingworks/arlo/issues/1609
• [ ] (Maybe?) https://github.com/votingworks/arlo/issues/1610
• [ ] https://github.com/votingworks/arlo/issues/1611
• [ ] https://github.com/votingworks/arlo/issues/1612
• [ ] https://github.com/votingworks/arlo/issues/1613
• [x] https://github.com/votingworks/arlo/issues/1614

[umbernhard]

Plan to do this in January blogpost