Избавляемся от констант и глобальных переменных

src/Layout/Blank.php

@@ -7,7 +7,7 @@ namespace ctiso\Layout;
 use ctiso\Filter\Filter,
     ctiso\HttpRequest;
 
-class Empty extends Filter
+class Blank extends Filter
 {
     function execute(HttpRequest $request)
     {

src/Layout/Manager.php

@@ -67,6 +67,7 @@ class Manager extends Filter
      */
     public function execute(HttpRequest $request)
     {
+//        print_r($request->get('mode'));
         foreach ($this->condition as $condition) {
             if (call_user_func($condition[0], $request)) {
                 $layout = $condition[1];