Adapted to directory structure

Conflicts:
	Core/Core.pro

Conflicts:
	App/App.pro
	App/src/TestDiffuseReflection.cpp
	App/src/TestFactory.cpp
	Core/Core.pro

All composite objects are now derived from ICompositeSample, which in turn is a tree of ISample objects.

DWBA diffuse reflection with cross correlation of roughness between layers, 4 new standard samples, bug in kvector.

Changed to logarithmic plots, corrected total intensity calculation and changed standard multilayer sample

Conflicts:
	App/src/TestFresnelCoeff.cpp
	Core/Core.pro