add tooltips, rm unhelpful @param lines, corr another forward

Core/Aggregate/InterferenceFunction2DSuperLattice.cpp

Core/Aggregate/InterferenceFunctionFinite3DLattice.cpp

Core/Aggregate/InterferenceFunctionRadialParaCrystal.cpp

Core/Correlations/FTDecay1D.cpp

Core/Correlations/FTDecay1D.h

Core/Correlations/FTDecay2D.cpp

Core/Correlations/FTDistributions1D.cpp

Core/Correlations/FTDistributions1D.h

Core/Correlations/FTDistributions2D.cpp

Core/Particle/IParticle.h

auto/Wrap/doxygenCore.i

auto/Wrap/libBornAgainCore.py

auto/Wrap/libBornAgainCore_wrap.cpp