Addtiional feature requests on samigo side panel

These were the additional features that some people in the survey would like to see against SAM-2586 that were captured from that ticket. I'm just assigning it to Leonardo Canessa as he worked on the original.

• Provide configuration option to change circles to checkmarks
• Provide some way to collapse all of part of the side panel for long tests
• Provide some kind of support for linear tests

I really like this panel. A feature we've had requested is to be able to make these panel(s) somehow accessible by the instructor so they can see real-time how the students are progressing. I think this might be a separate feature but feels like it would use a similar UX.