Add frontmatter

Add new systems, modify system names, remove double titles

added 3 commits

• 99407ee9...c4b10ef1 - 2 commits from branch dev
• 36497d96 - Merge branch 'dev' into add_frontmatter

Compare with previous version

enabled an automatic merge when the pipeline for 36497d96 succeeds

mentioned in commit 0969d950

merged