implements a needle cell fix - NOT YET TESTED, due to to missing test case

src/GridGenerator/grid/Grid.h

src/GridGenerator/grid/GridBuilder/MultipleGridBuilder.cpp

src/GridGenerator/grid/GridImp.cu

src/GridGenerator/grid/GridImp.h

src/GridGenerator/grid/GridMocks.h

...tor/grid/GridStrategy/GridCpuStrategy/GridCpuStrategy.cpp

...rator/grid/GridStrategy/GridCpuStrategy/GridCpuStrategy.h

...tor/grid/GridStrategy/GridGpuStrategy/GridGpuStrategy.cpp

...rator/grid/GridStrategy/GridGpuStrategy/GridGpuStrategy.h

src/GridGenerator/grid/GridStrategy/GridStrategy.h

targets/apps/HULC/main.cpp