Cache Ajax JSON, XML, text/html, header issue

Cache Ajax http://developer.yahoo.com/performance/rules.html#cacheajax
application/json, application/xml, text/html
Avoid header X-Frame-Options duplication case
Apply default-time-zone
Ajax SEO v2.0

## Total redesign version 2.0

* Pre-render for API download in background
* Omitting [optional
tags](http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#optional-tags)
* HTML5 [bidi](http://dev.w3.org/csswg/css-writing-modes/#unicode-bidi)
[auto-direction](http://www.w3.org/International/docs/html-bidi-requirements/#auto-direction)
writing
* MySQLi extension ([MySQL extension is
deprecated](http://php.net/manual/en/migration55.deprecated.php))
* Removed hideAddressbar() since depressed on featured browsers