We defined default behaviour in our configuration -> not needed
Added our own ServiceFactory for Assetic to include a ServiceLocator instance instead of default one.

Added our three filters to the settings for this ServiceLocator.

Instead of writing
        'common_jquery_yui' => array(
                'name' => '\CommonBundle\Component\Assetic\Filter\Js',
        ),
it is now
	'filters' => array('js'),
.