Untimed Grid #items correct is incorrect (3 hours)

[lachko]

For an untimed grid the number of correct items is the total number of items and the number of incorrect items are all items marked as incorrect. Currently the number_of_items_correct comes up as negative but correct in absolute value. We also do no need the number of attempted items

[TSSlade]

@lachko - is this still open, or should it be closed? Did Evans' fix above not actually address it?