Application refactor

[wdalmut]

Check and fix application.php.

• should be less than 100 LOC
• controllers configuration is quite complex

[wdalmut]

A complete refactor is the only way.

Separate Application and FrontController should be a good idea.

[wdalmut]

Move controller handling to a Dispatcher

<?php
class Dispatcher
{
    public function dispatch(Route $route) { /* ... */ }
}