FIX: prefactor taken into account for ICP files
FIX: prefactor taken into account for ICP files

ICP style files use a prefactor for the monitor, now data.monitor = prefactor * m0 when ICP files are loaded.

granrothge/neutronpy,granrothge/neutronpy,neutronpy/neutronpy,pseudocubic/neutronpy,pseudocubic/neutronpy,neutronpy/neutronpy