Squashed 'lib/settingsnode/' changes from 8afb082..8c852ca
Squashed 'lib/settingsnode/' changes from 8afb082..8c852ca

8c852ca Only use const references for indent strings

git-subtree-dir: lib/settingsnode
git-subtree-split: 8c852ca0198e173407e76584237d88ea8117659d

swillner/disaggregation,swillner/libmrio