Fix Phame escaping issue

Summary: Fixes blog.phacility.com, etc. There's bascially no plausible way we can do better here, especially once we get the Wordpress "API" up and running.

Test Plan: patched secure.phabricator.com live

Reviewers: vrana

Reviewed By: vrana

CC: aran

Differential Revision: https://secure.phabricator.com/D4958