if ```scoreValues``` is an array with something in it, and minimum is not in the array of scoreValues (in case someone didn't create a scoreLevel for the minimum amount of points), add minimum to the beginning of the array (since its a sorted array) and add a "Score Level" of "Minimum" (even if it doesn't do anything per se, a user should probably be able to select the lowest and highest values for an assignment even if there are no scoreLevels