Hello Victor,
The first time I checked the link the buttons were visible, but now there are removed. However, I encounterd the js alert saying that LibraryDocument( Image) manager was not defined.
This problem is due to different way to call the template that contains the WebEditor.
To fix this please use the following js.
The major issue with the styling can be fixed after setting the classes below:
All the best,
Ivan Dimitrov
the Telerik team