R1:0ae0f352b053

Use ApplicationSearch in the calendar event list view

Summary: Ref T4375. Basic ApplicationSearch integration to power this more flexibly.

Test Plan: {F108762}

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4375

Differential Revision: https://secure.phabricator.com/D8148