R1:86231a9d6db5

Move Guides ObjectList styles to PHUIObjectItemListView

Summary: I plan to reuse these styles with Config, maybe also Almanac, etc.

Test Plan: Review /guides/, see same styles.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D16467