fixes bug in VF-GPU grid refinement with wrong constants

CMakeLists.txt

src/GridGenerator/grid/GridBuilder/MultipleGridBuilder.cpp

src/GridGenerator/grid/GridInterface.cu

src/VirtualFluids_GPU/Calculation/UpdateGrid27.cpp

...rtualFluids_GPU/DataStructureInitializer/GridProvider.cpp

src/VirtualFluids_GPU/GPU/ScaleCF27.cu

src/VirtualFluids_GPU/GPU/ScaleFC27.cu

src/VirtualFluids_GPU/LBM/Simulation.cpp

targets/apps/LBM/gridGeneratorTest/main.cpp