Upgrade to Webpack 4

See merge request gitlab-org/gitlab-ee!5569

Port "Display merge commit SHA in merge widget after merge"

See merge request gitlab-org/gitlab-ee!5587

add system note for weight change, closes #1481

Closes #1481

See merge request gitlab-org/gitlab-ee!5531

Geo repository verification: ignore repos/wikis needing resync

See merge request gitlab-org/gitlab-ee!5568

Port to EE: Live trace: Use efficient destroy all (for `dependent: :destory` problem)

See merge request gitlab-org/gitlab-ee!5593

Make push mirrors CE

See merge request gitlab-org/gitlab-ee!5484

Show pod name for each deploy replica

Closes #5242

See merge request gitlab-org/gitlab-ee!5523

Add Geo information to console message

See merge request gitlab-org/gitlab-ee!5588

Add Merge Requests support for Jira Development Panel

Closes #2646

See merge request gitlab-org/gitlab-ee!5534

Report git status whenever ee-specific-lines-check failed to rebase cleanly

See merge request gitlab-org/gitlab-ee!5594

Repository verification on Geo secondary

Closes #5564 and #4746

See merge request gitlab-org/gitlab-ee!5550

Live trace: Use efficient destroy all (for `dependent: :destory` problem)

See merge request gitlab-org/gitlab-ce!18575

Update item titles and add help text in Geo nodes admin dashboard

Closes #5146

See merge request gitlab-org/gitlab-ee!5306

This way it would be much easier to debug

New CI Job live-trace architecture (v2)

Closes #44935

See merge request gitlab-org/gitlab-ce!18169

Closes gitlab-org/gitlab-ee#5564

For easier overriding methods.

Pick the changes from gitlab-org/gitlab-ce!18484 into EE.