update load/save workflow to handle multiple inputs
update load/save workflow to handle multiple inputs

Changes to the way we read & write workflow .xml files now that
custom analyses can have multiple inputs.

arborworkflows/Visomics,arborworkflows/Visomics,Visomics/Visomics,arborworkflows/Visomics,Visomics/Visomics,Visomics/Visomics,arborworkflows/Visomics,arborworkflows/Visomics,arborworkflows/Visomics,Visomics/Visomics,Visomics/Visomics,Visomics/Visomics