Merge branch 'documentation' into 'master'

...shRefinementFluidParticleCoupling/AMRSedimentSettling.cpp

...MeshRefinementFluidParticleCoupling/AMRSettlingSphere.cpp

apps/benchmarks/CNT/FilmSpecimenGenerator.py

...idParticleCoupling/SphereMovingWithPrescribedVelocity.cpp

...ngWithLoadBalancing/FluidParticleWorkloadDistribution.cpp

...lingWithLoadBalancing/FluidParticleWorkloadEvaluation.cpp

apps/benchmarks/GranularGas/ConfigGenerator.py

apps/benchmarks/SchaeferTurek/SchaeferTurek.cpp

...CombinedResolvedUnresolved/CombinedResolvedUnresolved.cpp

...isingParticleInFluidAMR/LightRisingParticleInFluidAMR.cpp

apps/tutorials/basics/02_Sweeps.dox

apps/tutorials/codegen/01_CodegenHeatEquation.dox

apps/tutorials/codegen/02_LBMLatticeModelGeneration.dox

apps/tutorials/codegen/03_AdvancedLBMCodegen.dox

apps/tutorials/codegen/Heat Equation Kernel.ipynb

apps/tutorials/cuda/01_GameOfLife_cuda.dox

apps/tutorials/lbm/01_BasicLBM.dox

apps/tutorials/lbm/02_BasicLBM_ExemplaryExtensions.cpp

apps/tutorials/lbm/03_LBLidDrivenCavity.cpp

apps/tutorials/lbm/05_BackwardFacingStep.cpp