Updated documentation on dimensionality of numpy array num_points.
They are in dimension [NE][NS][[NM][NO], where oi gives the number of dispersion points at that offset.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-17
Parent: [r24013]
Child: [r24015]
