Convert phutil_render_tag(X, Y, phutil_escape_html(Z)) to phutil_tag

Summary:
Created with spatch:

- phutil_render_tag
+ phutil_tag
  (X, Y,
- phutil_escape_html(
  Z
- )
  )

Test Plan: Loaded homepage

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4501