This allows the table to contain study site IDs which can remain attributed to images and which can then inform other steps of the pipeline.
Also added gzip compression of just the nii file after the tarball is extracted. Saves some disk space.
Remains to do this:
[x] Adjust the two CSD scripts to accept that table and use it to compute response functions within site and use the appropriate response function for each subject based on their site when doing csd
Remains to do this:
When done will close #4