Calendar query results should be ordered from first start date to last start date

Summary: Closes T8041, Calendar query results should be ordered from first start date to last start date

Test Plan: Open "Upcoming Events" in Calendar, verify that the event with the first start date is first and that events are ordered in ascending start dates.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T8041

Differential Revision: https://secure.phabricator.com/D12968