Change setErrorView to setInfoView in PHUIObjectBoxView

Summary: Renames the method in PHUIObjectBoxView to match the new PHUIInfoView class.

Test Plan: grepped codebase. Went to Calendar and tried a new status.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12005