Refactoring and testing vectors and arrays.

examples/navier-stokes/navierStokesSolver.h

examples/simple-solver/simpleProblemSolver.h

src/core/CMakeLists.txt

src/core/arrays/CMakeLists.txt

src/core/arrays/tnlArray.h

src/core/arrays/tnlMultiArray.h

src/core/arrays/tnlSharedArray.h

src/core/cuda/reduction-operations.h

src/core/tnlCommunicator.h

src/core/vectors/CMakeLists.txt

src/core/vectors/tnlMultiVector.h

src/core/vectors/tnlSharedVector.h

src/core/vectors/tnlVector.h

src/implementation/core/CMakeLists.txt

src/implementation/core/arrays/CMakeLists.txt

src/implementation/core/arrays/tnlArray_impl.cpp

src/implementation/core/arrays/tnlArray_impl.cu

src/implementation/core/arrays/tnlArray_impl.h

src/implementation/core/arrays/tnlMultiArray1D_impl.h

src/implementation/core/arrays/tnlMultiArray2D_impl.h