[GREENFOOT-176] Summary on scenario update
It'd be nice if, as well as the "a new version of this scenario was uploaded on blah" appearing on the scenario page, we could have a reason for the update or a short summary of what was updated \- this could be added via an extra text box on the gallery export page. It could then appear on the gallery as something like "a new version of this scenario was uploaded on blah (sounds added)" or similar.
- Issue type: Task
- Priority: Medium
- Fix versions: 2.0