Ex #09b still fails.

specific implementation RotationZ_3D.
Raw material for all other transforms temporarily moved to
UnusedTransform3D.h.
Status: Core compiles, FunctionalTests not yet.

- 3rd person form: "Does" this or that.
- For all const methods that return something: "Returns" ...
- For boolean return value: "Returns true if " ...

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format, remove some outcommented code

Implement multiparameter fitting (3): added necessary normalization to enable comparison with experiments: added factor coming from particle densities

Multiple changes to let Isgisaxs9-like samples to register properly they components in parameter pool

Export of OutputData in python; isgisaxs9 and mesocrystal functional test are exported to python, many corresponding changes.

Added form factor for prism3 (of IsGISAXS) and adapted DWBASimulation to deal with multiple particles

Rewritten IsGISAXS Example 3 code using the new Experiment class (2): added MultiLayerDWBASimulation class.

Refactored decorator classes, added Experiment, Beam and Detector classes and added prototype pattern to many classes (clone() function)