Merge branch 'cosmetics' into 'NIFTy_6'

cosmetics

See merge request !382
9 jobs for NIFTy_6 in 10 minutes and 27 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build Docker
passed build_docker_from_cache #976045

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  Test
passed test_mpi #976047

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passed test_serial #976046

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  Demo Runs
passed run_bernoulli #976052

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passed run_curve_fitting #976053

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passed run_getting_started_1 #976049

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passed run_getting_started_2 #976050

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passed run_getting_started_3 #976051

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passed run_ipynb #976048

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