Merge remote-tracking branch 'origin/master' into FD_solver

.gitlab-ci.yml

CMakeLists.txt

build.sh

configure

discover_os

install_BOOST.sh

install_CMAKE_on_CI.sh

src/CMakeLists.txt

src/Graph/CartesianGraphFactory.hpp

src/Grid/Geometry/grid_smb.hpp

src/Grid/cuda/cuda_grid_gpu_funcs.cuh

src/Grid/cuda/cuda_grid_gpu_tests.cu

src/Grid/cuda/cuda_grid_unit_tests_func.cu

src/Grid/cuda/map_grid_cuda_ker.cuh

src/Grid/grid_base_implementation.hpp

src/Grid/grid_common.hpp

src/Grid/grid_key.hpp

src/Grid/grid_key_dx_expression_unit_tests.hpp

src/Grid/grid_sm.hpp

src/Grid/grid_sm_unit_tests.hpp