dataSets might not be required for slope-tools. Backing out
"… can specify that an image pane should show an entire image" converter.

continues: [#68397404] (Converter changes only here)

"An author can specify that an image pane should show an entire image.
When the activity is run, add scaled borders around the image as
needed so that the whole image is always seen."

https://www.pivotaltracker.com/story/show/68397404