Add hreflang to pages for seo across languages.

<meta name="Description" content="<?cs var:page.metaDescription ?>"><?cs

  /if ?>

<link rel="shortcut icon" type="image/x-icon" href="<?cs var:toroot ?>favicon.ico" />

<link rel="alternate" href="http://developer.android.com/<?cs var:path.canonical ?>" hreflang="en" />

<link rel="alternate" href="http://developer.android.com/intl/es/<?cs var:path.canonical ?>" hreflang="es" />

<link rel="alternate" href="http://developer.android.com/intl/id/<?cs var:path.canonical ?>" hreflang="id" />

<link rel="alternate" href="http://developer.android.com/intl/ja/<?cs var:path.canonical ?>" hreflang="ja" />

<link rel="alternate" href="http://developer.android.com/intl/ko/<?cs var:path.canonical ?>" hreflang="ko" />

<link rel="alternate" href="http://developer.android.com/intl/pt-br/<?cs var:path.canonical ?>" hreflang="pt-br" />

<link rel="alternate" href="http://developer.android.com/intl/ru/<?cs var:path.canonical ?>" hreflang="ru" />

<link rel="alternate" href="http://developer.android.com/intl/vi/<?cs var:path.canonical ?>" hreflang="vi" />

<link rel="alternate" href="http://developer.android.com/intl/zh-cn/<?cs var:path.canonical ?>" hreflang="zh-cn" />

<link rel="alternate" href="http://developer.android.com/intl/zh-tw/<?cs var:path.canonical ?>" hreflang="zh-tw" />

<title><?cs

  if:page.title ?><?cs

    var:page.title ?> | <?cs