Mobile day view should display event list, not day table

Summary: Closes T8178, Mobile day view should display event list, not day table

Test Plan: Open day view on a device, observe that day table is hidden.

Reviewers: chad, Blessed Reviewers, epriestley

Reviewed By: Blessed Reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T8178

Differential Revision: https://secure.phabricator.com/D12916