SUS Calculation block#356

It would be great to have a SUS score calculation block (invisible from users) that researchers can use to analyze results through the interface.

Currently, I have to go into a spreadsheet and compute it myself. Then I segment the scores to identify outliers and those that struggled the most. Then I have to go back to Useberry and lookup those invidiual users so that I can then go through their answers and playbacks 1 by 1 to understand why they struggled more than others.