Making the day view slightly less bad.

Summary: Ref T4393, Making the day view slightly less bad.

Test Plan: Open Calendar Advanced Search, search for day with multiple events starting at the same time, events should show up side by side, and should link to actual events.

Reviewers: chad, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T4393

Differential Revision: https://secure.phabricator.com/D12686