Populate ROI's in real time for Freesurfer computations

[spanta28]

For the foll. computations, in the pipeline setup page, we want to populate ROI's by having the user upload a sample Freesurfer stats file (asegstats* from fs outputs). Example file here: subject0_aseg_stats.txt

https://github.com/trendscenter/coinstac-regression-fsl https://github.com/trendscenter/coinstac-ssr-fsl https://github.com/trendscenter/coinstac-msr-fsl