Scoring phase is too non-verbose even when `-vvv` is passed

While executing verify.py, the preprocessing and extraction of each sample is carefully reported when in -vvv mode. The same does not happen when scoring. There is absolutely no output.

It would be good if the scoring bit output the number of models to be scored and, as it advances from one model to another, a printout of the model-identifier that was just scored.

@mguenther: is that doable?