fixing stuff and style of Jacobi3D #81

Job	Run time
ci-amd64 / check-dockerfile-modifications-with-last-commit	7s
ci-amd64 / check-docker-artifact-existence	5s
ci-amd64 / check-dockerfile-modifications-with-base	4s
ci-amd64 / compile-and-test-standard	0s
ci-amd64 / compile-and-test-local-custom-image	7s
ci-amd64 / build-image	-1s
ci-amd64 / analyze-coverage-report	0s
	22s

Provide feedback