Closes gitlab-org/gitlab-ee#2855.

To bring the idea of a readonly database to CE, we need to check for
`readonly?` instead of `secondary?`.

See gitlab-org/gitlab-ce#37534.

Resolve "Navigating to another group board breaks navigation sidebar"

Closes #3397

See merge request gitlab-org/gitlab-ee!3010

CE upstream

Closes gitaly#544, gitlab-qa#68, and gitaly#595

See merge request gitlab-org/gitlab-ee!3051

Remove database_geo.yml from Geo instructions

See merge request gitlab-org/gitlab-ee!3069

Re-works create security event after failed oauth login spec to still work after the new OAuth changes.

Introduce CI/CD pipeline processing quotas

Closes #3493

See merge request gitlab-org/gitlab-ee!2986

[ci skip]

[ci skip]

This is already handled automatically by Omnibus. We forgot to
remove this section when we added support.

[ci skip]

[ci skip]

[ci skip]

Fix GitLab QA: increase window size to ensure License link shows

See merge request gitlab-org/gitlab-ce!14674

Consolidate Geo upgrade instructions into one document

Closes #3628

See merge request gitlab-org/gitlab-ee!3057

Fix NoMethodErrors caused by incorrect module loading

Closes #3521

See merge request gitlab-org/gitlab-ee!3062

[EE] Fix the default branches sorting to actually be 'Last updated'

See merge request gitlab-org/gitlab-ee!2931

Use ActiveRecord::Tasks::DatabaseTasks directly in geo rake tasks

Closes #3543

See merge request gitlab-org/gitlab-ee!3019

Update a bunch of docs images

See merge request gitlab-org/gitlab-ee!3063

Fix removing the username from the git repository URL for pull mirroring

Closes #3588

See merge request gitlab-org/gitlab-ee!3060

Show errors when rebase onto target branch fails in the UI

Closes #1774

See merge request gitlab-org/gitlab-ee!2780

Add push_rules is_sample partial index

See merge request gitlab-org/gitlab-ee!2966

Add new push rule to reject unsigned commits

Closes #3285

See merge request gitlab-org/gitlab-ee!2913

GitLab QA fix: Adjust license key add for GitLab 10.0 changes

See merge request gitlab-org/gitlab-ee!3059