Wrap Up does not perform a check of results

[tbezemer]

In some cases, when for some reason a job has not returned (proper) results (e.g. an empty .error file and a properly formatted .out file), the wrap up script still creates a summary_results.txt.gz file. In this case, only 10 variants were returned, in stead of 11. In the "greater scheme of things" when performing many experiments, one missing row in a results table is easily overlooked. We should correct this by making the wrap up script perform quality controls of the results, so that the user can be notified when things are not in order.