If there is just one group, feedback doesn't work

Should we cover this situation?

• • yes, its crucial
• • uhm, I don't care atm ( = no)

How do we solve the problem conceptually?

• • no feedback if there is just one group
• • In case there is just one Group designed by docent, we force him to open a second
• • I have a much better idea, but I have to write it as a comment, since I didn't open this issue

• issue is fixed =)