title: Open Firefox in Full Screen mode
body: <p>I'd like my users to open the browser and it goes in to full screen mode immediately.  The configuration is Firefox 42 in Fedora 22.  My application controls the server and the client.  So we could use <a href="https://stackoverflow.com/questions/12277731/firefox-force-full-screen-mode-from-webpage">javascript</a> (seems not possible for security reasons) or a Firefox extension.  We were using R-Kiosk to do this, but it's not supported in new browsers.  This question is the same as <a href="https://stackoverflow.com/questions/9542492/how-to-open-firefox-in-full-screen-mode">this</a> except for Fedora.</p>
  
  <p>If there's no way to do this from Firefox, is there a way to do this using the desktop (e.g. desktop icon)?</p>