`Assessment`: Less error-prone method for adding elements of the “Structured Evaluation Criteria” to the “Feedback” section in assessment mode

[laxerhd]

Is your feature request related to a problem?

The drag & drop function of the Structured Assessment Criteria in the exam/exercise assessment mode does not always work. When dragging elements from the Structured Assessment Criteria tab to the Feedback area, it may happen that you hit an element that has already been placed in the Feedback area. There is no indication that adding the feedback has failed. Some do not check whether the element has been added to the feedback list, especially if the list is already very long. This can lead to incomplete ratings being published. Furthermore, there is no indication that any element of the Structured Assessment Criteria was used up to its maximum amount.

Describe the solution you'd like

Add plus and minus signs (add / remove) to each element in the “Structured Evaluation Criteria” so that drag & drop is no longer necessary. In addition, elements that have been used for the maximum number should be grayed out, so you can't add them anymore.

Describe alternatives you've considered

Instead of adding plus and minus boxes to the items in the Structured Evaluation Criteria, you could make them double-clickable to move them to the Feedback section.

Additional context

When working as a tutor, it sometimes happend, that draging the elements to the "Feedback" section did not succeed. If there are many criteria for the exam/exercise, it becomes increasingly unmanageable to track whether each individual element has been added correctly. For this reason, the chance of missing or incomplete feedback elements is high. Even if the points of this element are only counted once, you can still add several of them, which can be confusing for the corrector.