[TIMOB-146] add support for image repaint when an image is loaded dynamically in a view

here is snippet of code that should support dynamic image reloading invoking new repaint API.

@@@javascript

var handler = function(e)
{
    if (e.srcElement.tagName == "IMG")
    {
                  Titanium.UI.currentWindow.repaint();
                  return;
    }
};  
document.body.addEventListener('load', handler, true);

@@@@