Complete transformation to GitLab CI/CD
https://about.gitlab.com/features/gitlab-ci-cd/:
- Better clarify Pipelines (remove from title, but have appear elsewhere?): https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/6977
- Check each occurrence of CI or GitLab CI and see if it needs to be CI/CD: https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/6977
- Add better images.
- Mention DevOps somewhere: !7349
- Mention Review Apps: !7349
- Make page awesome
Edited by username-removed-1243277