add files
adding config files
changed the UI, created separate index pages for each user type, and more stuff
added cakephp debug kit
added a name virtual field for users and updated the UI for the index pages
added user data validation, updated layout and stylesheet, added Add and Edit views and corresponding logic in controller
Update Tests and fix view
updated the class diagram and added a PNG version of it for easy viewing
Merge remote-tracking branch 'origin/Develop/Bill'