Whiteboard student being able to see 'student access' checkbox

[DasGabelhauser]

might be worth making it invisible, if you weren't already going to.
feel free to just close this issue if you disagree

[dmb537]

Never got done. Potentially worth having visible and updated as tutor changes it so that student know if they're allowed to draw or not, but as we never finished that functionality this is kind of a moot point.