Added {ASPECT_RATIO} and {ASPECT_RATIO_PERC}.

In the server object code. This will make a resizable player more easy. For example with videojs:
```
<style type="text/css">
  .video-js {padding-top: {ASPECT_RATIO_PERC}%;}
  .vjs-fullscreen {padding-top:0;}
</style>

<div class="v" style="width=100%; max-width="{WIDTH}px;">
<video id="MediaMosa_video_1" class="video-js vjs-default-skin"  controls preload="auto" width="auto" height="auto" poster="{STILL_URI}" data-setup="">
 <source src="{TICKET_URI}" type='video/mp4'>
</video>
</div>
```