Upgrade escape_utils to 1.2.1

See merge request gitlab-org/gitlab-ce!23248

CE upstream - 2018-11-20 18:49 UTC

Closes gitlab-ce#51635

See merge request gitlab-org/gitlab-ee!8536

Remove instances of `@extend .monospace`

See merge request gitlab-org/gitlab-ce!23089

CE upstream - 2018-11-20 15:23 UTC

See merge request gitlab-org/gitlab-ee!8535

Externalize strings from `/app/views/peek`

See merge request gitlab-org/gitlab-ce!23207

Resolve "The reply shortcut can add any text of the page to the "comment" text area"

Closes #54032

See merge request gitlab-org/gitlab-ce!23096

This matches the version shipped in gitaly-ruby.

The main changes between 1.1.1 and 1.2.1 are CI-related
improvements:
https://github.com/brianmario/escape_utils/compare/1.1.1...1.2.1

Open first 10 merge request files in IDE

Closes #51635

See merge request gitlab-org/gitlab-ce!23234

# Conflicts:
#	app/serializers/project_mirror_entity.rb
#	app/views/projects/settings/repository/show.html.haml
#	locale/gitlab.pot

[ci skip]

Add doc for epic state change notifications

Closes #8476

See merge request gitlab-org/gitlab-ee!8528

Make sidekiq-cluster play well with Sidekiq 5.2.2+

Closes gitlab-ce#54253

See merge request gitlab-org/gitlab-ee!8522

CE upstream - 2018-11-20 13:22 UTC

Closes gitlab-ce#54189, #8488, and gitlab-ce#54236

See merge request gitlab-org/gitlab-ee!8533

Allow path access during testing

Closes #8504

See merge request gitlab-org/gitlab-ee!8532

Docs: fix user metrics doc

See merge request gitlab-org/gitlab-ce!23233

Resolve "Docs feedback: Update gitaly docs"

Closes #54166

See merge request gitlab-org/gitlab-ce!23191

SSH public-key authentication for push mirroring

Closes #49565

See merge request gitlab-org/gitlab-ce!22982

Push mirroring SSH support

Closes gitlab-ce#49565

See merge request gitlab-org/gitlab-ee!8116

[ci skip]

# Conflicts:
#	CHANGELOG.md
#	locale/gitlab.pot
#	spec/models/merge_request_spec.rb
#	spec/models/project_wiki_spec.rb
#	spec/models/repository_spec.rb
#	spec/services/quick_actions/interpret_service_spec.rb

[ci skip]

Sidekiq 5.2.2 introduced a change
(https://github.com/mperham/sidekiq/pull/3936/files) that prevents queue
names from being duplicated. This breaks our current GitLab.com
config because we have some sidekiq-cluster processes configured
as the following:

```ruby
sidekiq_cluster['queue_groups'] = ["process_commit,process_commit"]
```

To keep things backwards compatible, we now only pass unique queue names
but scale the weights accordingly by the number of queues mentioned.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/54253

Fix typos in specs and js

See merge request gitlab-org/gitlab-ee!8455

Enable even more frozen string for lib/gitlab

See merge request gitlab-org/gitlab-ce!23225

CE upstream - 2018-11-20 08:21 UTC

See merge request gitlab-org/gitlab-ee!8527

Exclude code owner from merge request participants to avoid spam

Closes #8396

See merge request gitlab-org/gitlab-ee!8466

Update 11.3-to-11.4.md

See merge request gitlab-org/gitlab-ce!23142