Switch to usage of FullFresnelMap in computation classes

Core/Computation/FullFresnelMap.cpp

Core/Computation/FullFresnelMap.h

Core/Computation/IComputationTerm.cpp

Core/Computation/IComputationTerm.h

Core/Computation/MainComputation.cpp

Core/Computation/MainComputation.h

Core/Computation/ParticleLayoutComputation.cpp

Core/Multilayer/LayerStrategyBuilder.cpp

Core/Multilayer/LayerStrategyBuilder.h