renderer.CanvasHandler.canvasSizeChanged(): added propagation of resize event
renderer.CanvasHandler.canvasSizeChanged(): added propagation of resize event

Now we can register a listener on the xml3d element for "resize". The event's
detail will hold an object with properties width and height.

CCLDESTY/xml3d.js,ariyapour/xml3d.js,ariyapour/xml3d.js,CCLDESTY/xml3d.js,xml3d/xml3d.js,xml3d/xml3d.js,Fiware/webui.Xml3d.js,Fiware/webui.Xml3d.js