Resolve CE/EE diffs in _flash_messages

Closes #11037

See merge request gitlab-org/gitlab-ee!12726

Update Rubocop to 0.69.0 and other gems

See merge request gitlab-org/gitlab-ce!28345

Update Rubocop to 0.69.0 and other gems

See merge request gitlab-org/gitlab-ee!12750

Fixes style-lint issues for blocks.scss

Closes #59838

See merge request gitlab-org/gitlab-ce!28251

Include MR information if possible when emailing notification of closing an issue

Closes #19569

See merge request gitlab-org/gitlab-ce!15610

CE backport of "Fix a broken spec for EE"

See merge request gitlab-org/gitlab-ce!28357

Fix a broken spec for EE in spec/services/merge_requests/rebase_service_spec.rb

Closes #11621

See merge request gitlab-org/gitlab-ee!12775

Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

Regen locale gitlab.pot file

See merge request gitlab-org/gitlab-ee!12774

Part of single codebase changes.

Fixes issues with show whitespace button in diffs

Closes #42597 and #58852

See merge request gitlab-org/gitlab-ce!28242

Add Let's Encrypt client

See merge request gitlab-org/gitlab-ce!27624

Part of adding Let's Encrypt certificates for pages domains

Add acme-client gem

Client is being initialized by private key stored in secrets.yml
Let's Encrypt account is being created lazily.
If it's already created, Acme::Client just gets account_kid by
calling new_account method

Make Let's Encrypt client an instance
Wrap order and challenge classes

Properly clear the merge error upon rebase failure

Closes #56139

See merge request gitlab-org/gitlab-ce!28319

i18n JS files starting with i

See merge request gitlab-org/gitlab-ce!28010

i18n JS files starting with i - EE

See merge request gitlab-org/gitlab-ee!12454

Resolve CE/EE diffs in accounts/show

Closes #11046

See merge request gitlab-org/gitlab-ee!12733

Resolve CE/EE diffs in help/index

Closes gitlab-ee#11051

See merge request gitlab-org/gitlab-ce!28335

Resolve CE/EE diffs in help/index

Closes #11051

See merge request gitlab-org/gitlab-ee!12728

Resolve CE/EE diffs in signup_box

Closes gitlab-ee#11047

See merge request gitlab-org/gitlab-ce!28336

Resolve CE/EE diffs in signup_box

Closes #11047

See merge request gitlab-org/gitlab-ee!12730

This fixes Ruby 2.6.x parser warnings:
https://github.com/rubocop-hq/rubocop/pull/7009

This fixes Ruby 2.6.x parser warnings:
https://github.com/rubocop-hq/rubocop/pull/7009

If `merge_error` is ever set after a failure, it is never cleared, even
after a subsequent, successful rebase. We now clear this field whenever
a successful rebase occurs.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/56139

clarify that "team" means "project" when considered for assignment purposes.

See merge request gitlab-org/gitlab-ce!27753

Add info about the single docs codebase effort

See merge request gitlab-org/gitlab-ce!28127

Fix Clusters::Instance invocation scope

See merge request gitlab-org/gitlab-ee!12740