Fixed Light CSR kernel.

src/TNL/Algorithms/Segments/CSR.hpp

src/TNL/Algorithms/Segments/CSRKernels.h

src/TNL/Algorithms/Segments/CSRView.hpp

src/UnitTests/Matrices/CMakeLists.txt

src/UnitTests/Matrices/SparseMatrixTest.hpp

src/UnitTests/Matrices/SparseMatrixTest_CSRLight.cpp

src/UnitTests/Matrices/SparseMatrixTest_CSRLight.cu

src/UnitTests/Matrices/SparseMatrixTest_CSRLight.h