Port of fix/29125-ee to CE

Closes #29125

See merge request !10796

Fix PlantUML integration in GFM

Closes #30557

See merge request !10651

Remove node modules cache because we already use artifacts

Closes #29226 and #31137

See merge request !10781

Fix orphaned notification settings

Closes #29688

See merge request !10763

Api fix build events rename to Job events

Closes #30412

See merge request !10586

Fix restricted visibility project setting

Closes #30581

See merge request !10622

Fix filtered search input width for IE

Closes #30856

See merge request !10662

Do try to drop it if ci_builds.job_id isn't there

Closes #29976

See merge request !10216

Fix issue's note cache expiration after delete

Closes #30457

See merge request !10461

Fix the MR widget that merged any MR when choosing the option "Merge when pipeline succeeds" from the dropdown

Closes #29568

See merge request !10611

[ci skip]

Fixed issue boards having a vertical scrollbar

Closes #30209

See merge request !10312

Disable invalid service templates (again)

Closes #30024

See merge request !10339

Return an empty array when dependencies is an empty array

Closes #30316 and gitlab-ci-multi-runner#2284

See merge request !10359

MR shortcuts counter for stable

See merge request !10497

Handle SSH keys that have multiple spaces between each marker

See merge request !10466

[ci skip]

Fix for open redirect vuln involving continue[to] params

See merge request !2083

Fix for three open redirect vulns using redirect_to url_for(params.merge)))

See merge request !2082

Fix for path disclosure in project import/export

See merge request !2080

Don’t show source project name when user does not have access

See merge request !2081

Remove class from SanitizationFilter whitelist

See merge request !2079

[ci skip]

Don't clean up the gitlab-test-fork_bare repo

Closes #30284

See merge request !10342

Backport API changes needed to fix sticking in EE

See merge request !10376

Merge branch '29539-fix-pipelines-container-width-with-parallel-diff-for-9-0-stable-merge' into '9-0-stable'

Reset container width when switching to pipelines MR tab -- `9-0-stable` merge edition

See merge request !10424

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/29539

Conflicts:
	app/assets/javascripts/commit/pipelines/pipelines_table.js
	app/assets/javascripts/merge_request_tabs.js
	spec/javascripts/commit/pipelines/pipelines_spec.js

Fix GitHub importer for PRs of deleted forked repositories

Closes #29541

See merge request !9992