R1:7137492e4a75

Normalize Calendar sidebar

Summary: Removes unneeded filters. Also - how do I get it to highlight the firs nav item? I assumed '' would match.

Test Plan: Review calendar app

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4547