LI3 Change layout depending whether admin continuation route is used or not

config\bootstrap\action.php

use lithium\action\Dispatcher;
//Allow admin continuation routes to be made. 
Dispatcher::config(
	array(
		'rules' => array(
			'admin' => array('action' => 'admin_{:action}')
		)
	)
);

config\bootstrap\media.php

/**
 *  Apply filter to render in admin layout when in admin section.
 */
use lithium\net\http\Media;
Media::applyFilter('render', function($self, $params, $chain){
	$request = $params['options']['request'];
	$admin = isset($request->params['admin']) ? $request->params['admin'] : false;
	if($admin){
		$params['options']['layout'] = 'admin';
	}
	return $chain->next($self, $params, $chain);
});

config\routes.php

/**
 * Enabble admin routes 
 */
Router::connect('/admin/{:args}', array('admin' => true), array('continue' => true));