Alter jgi_file_staging.py to group sequence_ids

[mflynn-lanl]

Originally, calls to the API endpoint https://files.jgi.doe.gov/search/?q={sequencing_id}&f=project_id&a=false&h=false&d=asc&p=1&x=10&api_version=2 were done one-by-one. However, they were stalling after 50-100 calls; The calls succeeded and then would just hang forever. I am re-writing the code to group the sequence id's so fewer calls are necessary