Fix:
* don't use 'PROBE_' prefix if the class/library doesn't extend an existing class ;
 * don't parent::__construct() if the class doesn't extend anything ;
 * if you need access to CI context, do : $this->_CI =& get_instance();
i18n: cleanup
Merge remote-tracking branch 'origin/dev' into dev

Conflicts:
	application/libraries/Page_manager.php
Resources updates: jquery, jquery-UI