Swapped the dot product position, when propagating the magnetisation in model NS CPMG 2site 3D.
This it to try to align to same method as in NS R1rho 2site.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-25
Parent: [r24297]
Child: [r24299]
