Migration 20170919211300_remove_temporary_ci_builds_index.rb created a
temporary partial index and tried to drop it at the end of the
migration. In some circumstances apparently it failed to drop the
index and it ended up in our schema.rb.

This accidentally failed to fail due to a bug in the regular
expression for partial indexes which caused the index creation in
schema.rb to be ignored. Now that that's fixed we could be
resurrecting this zombie index from the past in some but not all
databases.

Add a migration to drop this index if it's present to reconcile this
discrepancy.

Avoid wrapping users in dropdown

Closes #38077

See merge request gitlab-org/gitlab-ce!14410

Document manual cleanup after background migration stealing

See merge request gitlab-org/gitlab-ce!14477

Fix locked shared runners problem

Closes gitlab-runner#2782

See merge request gitlab-org/gitlab-ce!14483

Update gitlab-shell to 5.9.2

See merge request gitlab-org/gitlab-ce!14446

Remove dead `Gitlab::Markdown::Pipeline` class

See merge request gitlab-org/gitlab-ce!14487

Update color variables

See merge request gitlab-org/gitlab-ce!14456

RepoEditor: Fix reopening the existing file on refresh.

Closes #38250

See merge request gitlab-org/gitlab-ce!14449

Fix a dash being rendered in the note's access role

Closes #37912

See merge request gitlab-org/gitlab-ce!14450

Add a `:type` to all specs

See merge request gitlab-org/gitlab-ce!14371

Remove execution permission (unix file permissions) for documentation

Closes #38287

See merge request gitlab-org/gitlab-ce!14471

Fix auto devops typos in Pipeline Settings view

Closes #38155

See merge request gitlab-org/gitlab-ce!14403

Fix PG::UniqueViolation external_email migration

Closes #38246

See merge request gitlab-org/gitlab-ce!14474

Removes cycle analytics service and store from global namespace

See merge request gitlab-org/gitlab-ce!14463

Migrate Gitlab::Git::Repository#log to Gitaly

Closes gitaly#508

See merge request gitlab-org/gitlab-ce!14179

Prevent URL concatenation for avatars

Closes #38189

See merge request gitlab-org/gitlab-ce!14437

Improve list of sorting options

Closes #36929

See merge request gitlab-org/gitlab-ce!14320

Add context tabs to dashboard/projects

Closes #29045

See merge request gitlab-org/gitlab-ce!14364

Missing parens prevented this migration from working in some cases.

Closes #38246

Fixed fly-out error if mousePos array is empty

See merge request gitlab-org/gitlab-ce!14338

Resolve "Undefined run_command when running rake gitlab:check"

Closes #38280

See merge request gitlab-org/gitlab-ce!14469

Merge branch '38021-add-instructions-for-upgrading-from-ce-to-ee-using-gitlab-omnibus-chart-docs' into 'master'

Add instructions for upgrading from CE to EE using GitLab Omnibus chart - docs

Closes #38021

See merge request gitlab-org/gitlab-ce!14347

Re-allow `name` attribute on user-provided anchor HTML

Closes #38196

See merge request gitlab-org/gitlab-ce!14452

Refactor spec/policies/project_policy_spec.rb to minimize the diff with EE

See merge request gitlab-org/gitlab-ce!14434

Remove navbar gradient

Closes #37287

See merge request gitlab-org/gitlab-ce!14457

Remove Grit settings from default settings

See merge request gitlab-org/gitlab-ce!14465

fix minor spelling mistakes

See merge request gitlab-org/gitlab-ce!14467