LDEV-5204 Embed images when exporting Whiteboard canvas In vanilla Whiteboard images are referenced by absolute URLs. If we upload content to another LAMS instance with a different URL, images will not be found. Now when exporting a LAMS LD we embed Whiteboard image base64 data directly in tool exported XML. When we import the LD, we check if image already exists on the server. If it does not, we recreate it from the exported data.