* Working version of video player.
* Adding default video url
* Reducing the default widget of video widget
* Fixed tests
* Adding video icon.
* Removing commented code.
* Adding playState, onPause, onStart, onEnd.
* Adding onPlay event.
* Fixing onPlay
* Adding isVisible field.
* Changing video icon.
* Fixing Popover table video.
* Adding an error message for no url.
