error_handler fixed
Database works now!

- Models fixed (heavy rewrite)
- mysql adapter fixed
- Model class now with comments
Fixed internal redirects

$config renamed to $conf_env
Made $data parameter optional
Controllers fixed & extended

- script and stylesheet paths fixed
- internal_redirect fixed
- response_time fixed

- added cross site request forgery protection
- added before method, that is called before the actual action
index.php updated

- fixed error handler
- added INDEXFILE constant
- added ROOTDIR constant
renamed main.css to application.css