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

Lattice2DIFParameter now is a class, InterferenceFunction2DLattice is protected against zero denominator, fix in project file to correctly treat FP exceptions under mac/linux

FitSuiteObject::setExperimentNormalize is now True by default, bug in Mask with non-explicit constructor, bug in Experiment::setDetector with missed Mask, new sub example in TestFittingModule2

Fixed bug in IsGISAXS Morphology file simulation (bug introduced during creation of a StrategyBuilder class) + some cleanup

Complex integrator implemented; standard integrator now reuses integration workspace, FormFactorSphere refactored

New debugging staff for floating point exceptions, check for zero bin size in useLargeBinApproximation