Fix cherry-picking or reverting through an MR

Closes #28711 and #28426

See merge request !9640

Update Rubyzip to 1.2.1

Closes #28933

See merge request !9660

Revert "Disallow system notes for closed issuables"

Closes #28207

See merge request !9673

8-17-stable Revert all yarn changes except for yarn.lock

See merge request !9689

This reverts commit dab6e029, reversing
changes made to bab14bdb.

Pick Yarn support into 8.17

See merge request !9591

[ci skip]

Fix concurrent access on builds/register

See merge request !9600

Expire all webpack assets by altering filename postfix

See merge request !9602

[ci skip]

https://gitlab.com/gitlab-org/gitlab-ce/builds/11259594

Disable invalid service templates

Closes #25112

See merge request !8850
Conflicts:
	db/schema.rb

Replace setInterval with setTimeout to prevent highly frequent requests

Closes #28212

See merge request !9271

Query performance regression fix affecting "Dashboard::ProjectsController#index.atom"

Closes #27267

See merge request !9526

Allow searching issues for strings containing colons

Closes #28357

See merge request !9400

Fix MR changes tab size count

Closes #27563

See merge request !9091

Disable unused tags count cache for Projects, Builds and Runners

Closes #27989

See merge request !9467

Pages 0.3.2

See merge request !9474

Added tooltip to add issues button on issue boards

Closes #27985

See merge request !9142
Conflicts:
	app/assets/javascripts/boards/boards_bundle.js.es6

Chat slash commands show labels correctly

Closes #28358

See merge request !9408

Create compare object with default branch when target branch is missing

Closes #28051

See merge request !9263

Fix issue where files on a fork could not be edited

Closes #28188

See merge request !9349

Spam check and reCAPTCHA improvements

Closes #28093

See merge request !9248
Conflicts:
	app/services/issues/create_service.rb

Fix the commit search UI

Closes gitlab-ee#1765

See merge request !9411

Hash concurrent foreign key names similar to Rails

See merge request !9415
Conflicts:
	lib/gitlab/database/migration_helpers.rb
	spec/lib/gitlab/database/migration_helpers_spec.rb

Improve performance of User Agent Detail

See merge request !9129
Conflicts:
	app/views/projects/issues/show.html.haml

Utilize bundler-ready Vue distribution

See merge request !9357

[ci skip]