<?php 
Object::add_extension('SiteTree', 'AccessKeyExtension');
Object::add_extension("Page_Controller","AccessKeyExtension");
 ?>
<?php 
Object::add_extension('SiteTree', 'AccessKeyExtension');
Object::add_extension("Page_Controller","AccessKeysControllerExtension");
DataObject::add_extension('SiteConfig', 'AccessKeysSiteConfig');
 ?>
Add extension to site config
ENHANCEMENT: Add extension to site config
