Leading and trailing days should be considered part of the month in month view.
Summary: Closes T8177, Leading and trailing days should be considered part of the month in month view.
Test Plan: Open month view, no days should be empty unless they don't have events. Modify query, make sure month view still obeys query.
Reviewers: epriestley, Blessed Reviewers
Reviewed By: epriestley, Blessed Reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T8177
Differential Revision: https://secure.phabricator.com/D12834