update in SlicedDensity, atomCOM/idCOM nstd of COM
update in SlicedDensity, atomCOM/idCOM nstd of COM

mlund/faunus,mlund/faunus,bjornstenqvist/faunus,mlund/faunus,gitesei/faunus,bjornstenqvist/faunus,bjornstenqvist/faunus,gitesei/faunus,gitesei/faunus