R1:fd9de5d6ecc8

Convert every two-column application except Maniphest to curtain views

Summary: Moves over everything except Maniphest, which has some special behavior.

Test Plan:
- Viewed a badge.
- Viewed a calendar event.
- Viewed a countdown.
- Viewed a Fund initiative.
- Viewed a Herald rule.
- Viewed a macro.
- Viewed an application.
- Viewed an owners package.
- Viewed a credential.
- Viewed a Ponder question.
- Viewed a poll.

Reviewers: chad

Reviewed By: chad

Differential Revision: https…