Added metrics support for multiclass-multioutput classification

Fix for #3453 
Ping @arjoly . Added support for `zero_one_loss` and `accuracy_score`

@arjoly I have tested that with `THRESHOLDED_MULTILABEL_METRICS`. if i tested that with all the existing metrics some resulted in `ValueError` and some with `TypeError` so it was not possible to use all of them with the `assert_raises` statement.