Calendar event icons show up on month and day views

Summary: Closes T7936, Calendar event icons show up on month and day views

Test Plan: Calendar month and day views should show event icons

Reviewers: chad, Blessed Reviewers, epriestley

Reviewed By: Blessed Reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7936

Differential Revision: https://secure.phabricator.com/D12943