Feature/unify key views

[fscholdei]

Proposed changes

Unify and add description to key view across user settings

Your checklist for this pull request

• [x] PR is well described
• [x] Related issues linked to PR if existing and labels set
• [x] Target branch is not master (in most cases develop should bet the target of choice)
• [ ] Code does not conflict with target branch
• [ ] New code is covered with unit tests
• [x] CHANGELOG.md updated
• [x] Definition of Done's fulfilled: DoD // UI DoD
• [x] Documentation updated (only necessary for new features or changed behaviour)

Checklist for branch merge request (not required for forks)

• [ ] Branch is green/blue on Jenkins
• [ ] Quality Gate passed on SonarQube

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!

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