Admin view of realisation in question preview

Had a suggestion that's come out of a couple of conversations, so putting it here... Whether the preview (not share view!) could have some sort of administrative view of the particular realisation presented, e.g. a list of the variables generated, perhaps correct answers to parts. The sort of thing that someone might grab from the JavaScript console. Could be in a collapsed menu..?

The issue names no files, tests, or entry points. First clarify the administrative view's scope, including which generated variables and correct answers it should expose and how it should differ from the share view. Done should be defined as an agreed preview interface and a way to verify the displayed realisation data.

Written by the indexing model from the issue text.