editor: fixing, refactoring, improving styling in choice exercises
editor: edumed exercises - visual tweaks
editor: Missing names of exercises on a canvas
editor: core plugin - edumed - remove execise button
editor: core plugin - edumed - first approach to all three choice exercises
editor: core plugin - edumed - first take on replace exercise
editor: core plugin - edumed - first take on gaps exercise
editor: core plugin - edumed - first take on order exercise