Migrated People's listing to PhabricatorObjectListView

Summary:
Depends on D5359

Exactly what it says on a tin

made icons white; replaced panel with header

Made People app God-Mode only; did @epriestley's comments

reverted god-mode changes

Test Plan:
{F36157}

tell my if you like

Reviewers: epriestley, chad, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5360