render_tag -> tag: PropertyListView

Summary: Converts callsites in PropertyListView (addDetail() and setTextContent()).

Test Plan: Grepped for PhabricatorPropertyListView, addDetail() and setTextContent().

Reviewers: vrana

Reviewed By: vrana

CC: aran

Maniphest Tasks: T2432

Differential Revision: https://secure.phabricator.com/D4695