R1:14ae5eee1c83

Revert "Remove PHUICalendarWidgetView"

Summary: This reverts commit 8ce8a761efe9995c371727fdfe9b9e5d7d1b4592.

Test Plan: N/A

Reviewers: chad, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12573