Does not allow for ses-Session directories

[celstark]

As-is, the run.py will look for T1 images with "ses-" in the filename, but the directory structure is still:
BIDS/sub-#/anat/sub-#_ses-# rather than
BIDS/sub-#/ses-#/sub-#_ses-#

[celstark]

FWIW, the fix is as simple as having line 19 in run.py change from:
glob(join(basedir,"sub-%s"%subject_label, "anat", "sub-%s_ses-*_T1w.nii.gz" % (subject_label)))
to
glob(join(basedir,"sub-%s"%subject_label, "ses-*", "anat", "sub-%s_ses-*_T1w.nii.gz" % (subject_label)))