R1:61c45e4927a0

Update Calendar for PHUITwoColumnView

Summary: Moves calendar event view to PHUITwoColumnView. Tightened up some phui status spacing.

Test Plan: Review Calendar Events, Differential status list.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D15387