max_score determination for problem
Right now it seems Zesje detemines the max_score for a given question based on the maximum positive score in the feedback options. This can lead to slight problems if one has multiple sub-questions and assigns the total scores separately: E.g., if we have a and b for 2 and 4 points, having "Correct a" and "Correct b" for 2 and 4 points will end up the max score being 4, including in the generated emails, yielding e.g. "Got 6 points out of 4" issues. It is possible to circumvent it by always having an extra option for max score even if not assigned to anyone, but I wonder if there is a better way to do this: e.g., by uniformizing the names of feedback options based on which the max score will be determined (having "total_score" or "max_score" in name e.g.). There also seems to be a new popup windows next to the feedback options allowing plus and minus signs to be assigned, not sure what the meaning of these is (treating positive points as negative with -?), but could also be an alternative to add here an option with "Include in max score determination" maybe.
Mostly a feature rather than a bug I think, but could increase usability, especially for newer users (I've had PhDs using it the first time and despite instructions they got all confused).