/**
  * 
  * @param UserExtended $user
  * @return array
  */
 private static function buildSpravaSubmenu($user)
 {
     $menu = [];
     $menu['hry'] = self::createNavMenuItem('sprava', 'hry', 'Hry');
     $menu['inventar'] = self::createNavMenuItem('sprava', 'inventar', 'Inventář');
     $menu['stoly'] = self::createNavMenuItem('sprava', 'stoly', 'Stoly');
     if ($user->isAdministrator()) {
         $menu[] = ["separator" => true];
         $menu['uzivatele'] = self::createNavMenuItem('sprava', 'uzivatele', 'Uživatelé');
         $menu['ovladaciPanel'] = self::createNavMenuItem('sprava', 'ovladaciPanel', 'Ovládací panel');
         $menu['hromadnyMail'] = self::createNavMenuItem('sprava', 'hromadnyMail', 'Hromadný mail');
     }
     return $menu;
 }