* Changed: ( ***Breaking Change*** ) the *AdminPageFramework_PostType* class properties and *AdminPageFramework_MetaBox* to be encapsulated into a class object each.
* Added: the *strHelp* field key that adds a contextual help tab on the upper part of the admin page.
* Fixed: the required WordPress version to 3.3 as some of the functionalities were relying on the screen object that has been implemented since WordPress 3.3.