"… can specify that an image pane should show an entire image" Authoring.

Nearly complete: [#68397404] (Authoring 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
"… can specify that an image pane should show an entire image" Authoring.

Complete: [#68397404] (Add Runtime changes to Authoring.)

"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