/**
  * Setup new backend
  *
  * @param Requirements_Backend $backend
  */
 protected function setupRequirements($backend)
 {
     // Flush requirements
     $backend->clear();
     $backend->clearCombinedFiles();
     $backend->setCombinedFilesFolder('_combinedfiles');
     $backend->setMinifyCombinedJSFiles(false);
     Requirements::flush();
 }