Convert phutil_render_tag(X, Y, pht('...')) to phutil_tag

Summary:
Created with spatch:

- phutil_render_tag
+ phutil_tag
  (X, Y, pht('...'))

The searched for < and & by sgrep.

Test Plan: Loaded homepage.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4504