Format Calendar list objects

Summary: Closes T8050, Format Calendar list objects

Test Plan: Open Calendar list, check that new formatting is true to mocks.

Reviewers: chad, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8050

Differential Revision: https://secure.phabricator.com/D13318