Add crumbs to calendar
Summary: Crumbs everywhere. Not sure how to better format the date, let me know.
Test Plan: Browse everything I can see in Calendar
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Maniphest Tasks: T4440
Differential Revision: https://secure.phabricator.com/D8265