[Update] _s commit f2d2495 to 37d2834

* Switch in and out of PHP to render fallback title. https://github.com/Automattic/_s/commit/f2d249563011641b7c9dfc0840c8472e62f53536
* Don't check for a private function. https://github.com/Automattic/_s/commit/47ee126fb4c8bcf2c7d23a4469524dbcb1993ab9
* Avoid repeatedly checking specific post format. https://github.com/Automattic/_s/commit/37d283481f5b4ea0a9c026521f9b60a186c8bcd9
* update language files. https://ja.forums.wordpress.org/topic/144628?replies=8