Wordpress integration for testing branch

Features a clean integration using the new integration structure.
* chat/lib/integration/wordpress/
* chat/lib/integration/wordpress/template/
* chat/lib/integration/wordpress/template/loggedOut.html
* chat/lib/integration/wordpress/CustomAJAXChat.php
* chat/lib/integration/wordpress/CustomAJAXChatInterface.php
* chat/lib/integration/wordpress/CustomAJAXChatShoutBox.php
* chat/lib/integration/wordpress/startup.php

This is based on the integration developed by utan (http://vcomputadoras.com/ajaxchat-wordpress-integration/) wurg the following changes.
* uses user_login instead of display_name to maintain unique usernames
* does not need any of the javascript changes made by utan.
* added support for channels.php, Wordpress is not a forum, this seemed appropriate.
* added registration and remember password links to AHAX-Chat login page.

This has also been completed as a new AJAX-Chat branch.