mean values for concentration

src/VirtualFluids_GPU/Calculation/CalcMedian.cpp

src/VirtualFluids_GPU/Calculation/CalcMedian.h

...rtualFluids_GPU/DataStructureInitializer/GridProvider.cpp

...U/DataStructureInitializer/GridReaderFiles/GridReader.cpp

src/VirtualFluids_GPU/GPU/CalcMac27.cu

src/VirtualFluids_GPU/GPU/GPU_Interface.h

src/VirtualFluids_GPU/GPU/GPU_Kernels.cuh

src/VirtualFluids_GPU/GPU/LBMKernel.cu

src/VirtualFluids_GPU/LBM/Simulation.cpp

src/VirtualFluids_GPU/Output/FileWriter.cpp

src/VirtualFluids_GPU/Output/FileWriter.h

src/VirtualFluids_GPU/Output/UnstructuredGridWriter.hpp

src/VirtualFluids_GPU/Parameter/Parameter.cpp

src/VirtualFluids_GPU/Parameter/Parameter.h