Handle the case of multiple datasets per name in sample json
requested to merge 171-get_unprocessed_files-does-not-work-for-multiple-dataset-per-dataset_name into master
Closes #171 (closed)
This MR is a fix for the case where root files from multiple datasets are grouped under the same "dataset name" in the sample.json. Previously, the script was retrieving the information on the dataset based on the first file for each name, assuming a single dataset per name.
Edited by Paul Lucas Devouge