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://secure.phabricator.com/D15416