1- modify the Html link and Form create methods
2- add reform_url function to bootstrap.
3- read the database connection from joomla configuration class.
4- modify the index.php in webroot to point to cakephp lib in joomla library folder.
5- modify the Layouts/default.ctp.
6- modify the CakeResponse.php.
7- override the redirect function to use joomla redirect 
7- add test class for front end and back end.