APPWTV-33 VideoWrapper class

APPWTV-33 implemented a VideoWrapper class that embeds HTML5 video element and updated ui.js  
dropped VideoPlayerView class  

The new class wraps a <video> element by using dom following reference at http://www.w3schools.com/tags/ref_av_dom.asp  

**known issues:** on tablet, autoplay seems to be ignored and one must tap on the video panel in order to get the video played (Asus Transformer, Jelly Bean, Chrome 25). Sadly the same occurs when calling videoElement.play() method. May be due to some system/browser policy on the video controls/caching? Once the video was played once (e.g. in the modal mode), the autoplay occurs.  
see also http://stackoverflow.com/questions/14895616/android-html5-video-works-when-clicking-play-but-not-video-play
Workaround: always set useControls:true in order to get at least some visual feedback of this