首页无内容时，隐藏默认信息“No front page content has been created yet”

 in page.tpl.php

In hook_preprocess_page() ...

https://groups.drupal.org/node/229993

function YOURTHEME_preprocess_page(&$variables) {
   if($variables['is_front']){
    $variables['title'] = ''; // This is optional ... it removes the default Welcome to @site-name
    $variables['page']['content']['system_main']['default_message'] = array(); // This will remove the 'No front page content has been created yet.'
  }
}