R1:7ec09d3924de

Use ObjectBoxView for Config pages

Summary: Doing to start to try to remove all the 'purple' PHUIHeaders around Phabricator and see what's left after.

Test Plan:
View each page

{F171007}

Reviewers: epriestley

Reviewed By: epriestley

Differential Revision: https://secure.phabricator.com/D9750