Homestyx hydra

R1:f33b5c30ebe0

Use the same date rendering display logic for both tooltips and subheaders

Summary: Ref T11816. This could be a little cleaner, but we currently have two copies of the logic. Get them using the same code. Once that's actually working I can go make the code a little prettier.

Test Plan: Viewed Calendar month view tooltips, saw the same values as subheaders.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11816

Differential Revision: https://secure.phabricator.com/D16880
Repository: R1 hydra
Commit Date: Nov 16 2016