updated images interface, fixed missing imports, now exports json file with used files
updated images interface, fixed missing imports, now exports json file with used files

oesteban/preprocessing-workflow,oesteban/fmriprep,chrisfilo/fmriprep,poldracklab/fmriprep,poldracklab/fmriprep,shoshber/fmriprep,oesteban/preprocessing-workflow,shoshber/fmriprep,poldracklab/preprocessing-workflow,oesteban/fmriprep,oesteban/fmriprep,poldracklab/fmriprep,poldracklab/preprocessing-workflow