title: What language codes are available in manifest file
body: <p>In my manifest file I have currently just one language setting.</p>
  
  <blockquote>
    <p>Resource Language="en-us"</p>
  </blockquote>
  
  <p>I want to make the app to work in all english stores (e.g. UK), which parameter should I choose? 
   Also, my App has multiple languages supported natively, so I need above codes for spanish, french, german and dutch languages, all regions, where can I find the corresponding codes?</p>