Improvements Needed

[jstout211]

• Emptyroom filtering -- EmptyrRoom6m didn't seem to filter out
• Check if fids are acquired and do not try to perform mri_preproc
• change n_jobs from -1 to (os.environ['OMP_core..?'])
• Add refresh button to the single subject in case files were updated outside of the gui
• If gui is not provided a bids folder, create a pop up with a folder explorer and then open gui
• if gui is luanched without a bids_root, just assume that the current directory is a bids dir, then if not pop up the above option