Fix review comments

.gitlab-ci.astron.yml

.gitlab-ci.common.yml

CMakeLists.txt

LICENSE

LICENSE.LESSER

README.md

cmake/FindCFITSIO.cmake

cmake/config/radler-config-version.cmake.in

cmake/config/radler-config.cmake.in

cmake/unittest.cmake

cpp/CMakeLists.txt

cpp/algorithms/deconvolution_algorithm.cc

cpp/algorithms/deconvolution_algorithm.h

cpp/algorithms/generic_clean.cc

cpp/algorithms/generic_clean.h

cpp/algorithms/iuwt/image_analysis.cc

cpp/algorithms/iuwt/image_analysis.h

cpp/algorithms/iuwt/iuwt_decomposition.cc

cpp/algorithms/iuwt/iuwt_decomposition.h

cpp/algorithms/iuwt/iuwt_mask.cc