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

Summary:
Created with spatch:

  lang=diff
  - phutil_render_tag
  + phutil_tag
    (X, Y, '...')

Then searched for `&` and `<` in the output and replaced them.

Test Plan: Loaded homepage.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4503
Convert phutil_render_tag(X, Y, pht('...')) to phutil_tag

Summary:
Created with spatch:

  lang=diff
  - 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
Convert simple phutil_render_tag() to phutil_tag()

Summary: Done manually.

Test Plan: Loaded homepage.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4509