ParticleComposition

LayerRoughness pointer in interface now points to zero, when no roughness exists (instead of default LayerRoughness())

New DetectorEditorWidget based on AwesomePropertyEditor, added limits on integer values for AwesomePropertyEditor.

Added ParticleCoreShell unit tests and refactored setAmbientMaterial (const ref parameter instead of const pointer)

IntensityMask corrected to work for normal and inverse cases, findClosestIndex behavior changed to work outside xmin, xmax

Provided possibility of giving different weights to different layouts in a layer (determined by the sum of the particle abundances in each layout)

automatically aligned (which enables vectorization for them)