Merge branch 'master' of ssh://gitlab.cern.ch:7999/GeoModelDev/GeoModel into fix-coin-comp

.gitlab-ci.yml

FullSimLight/CMakeLists.txt

FullSimLight/MagneticField/MagFieldServices/CMakeLists.txt

FullSimLight/README.md

FullSimLight/fullSimLight.cc

FullSimLight/pythia.g4

GeoModelG4/.gitlab-ci.yml

GeoModelG4/CI/Dockerfile

GeoModelG4/CI/setup_lcg.sh

GeoModelG4/CMakeLists.txt

GeoModelG4/GeoMaterial2G4/CMakeLists.txt

GeoModelG4/GeoModel2G4/src/ExtParameterisedVolumeBuilder.cxx

GeoModelG4/GeoSpecialShapes/CMakeLists.txt

GeoModelG4/LICENSE

GeoModelTools/GDMLtoGM/CMakeLists.txt

GeoModelTools/GeoModelXMLParser/CMakeLists.txt

cmake/SetupXercesC.cmake

documentation/docs/how/how_build_fullsimlight.md

documentation/mkdocs.yml