Merge branch 'master' into 'patch-19826111318'

...19-11-15-tracking-down-missing-tcp-keepalives.html.md.erb

...single-application-to-accelerate-your-startup.html.md.erb

source/posts/2019-11-26-e-factor-productivity.html.md.erb

source/posts/2019-11-26-migrating-from-jenkins.html.md.erb

source/posts/2019-11-27-creationline-post.html.md.erb

source/posts/2019-11-27-kubecon-eu-cfp-support.html.md

...019-11-27-security-release-gitlab-12.5.1.released.html.md

...019-11-27-security-release-gitlab-12.5.2.released.html.md

...osts/2019-11-29-shopping-for-an-admin-account.html.md.erb

source/pricing/licensing-faq/index.html.md

source/pricing/premium/index.html.md

source/pricing/ultimate/index.html.md

source/services/integration/index.html.haml

source/solutions/open-source/program/index.html.erb