Laravel base installation and mods

Installed Laravel 4.1

* Environment detection: add `bootstrap/environment.php` with the name of the env, eg `local`, otherwise it will assume `production`;
* Added basic HTML template with functions to add javascript and stylesheets from the Controller;
* Functions in BaseController for automatically selecting the right View file based on namespace, controller and method;
* Added Messages package for success, warning, error and info (as per bootstrap 3);