Cleanup pipeline build stage background migration

Closes #43854

See merge request gitlab-org/gitlab-ce!18778

Fix nginx metric names

Closes #45163

See merge request gitlab-org/gitlab-ce!18770

Client implementation GetRawChanges

See merge request gitlab-org/gitlab-ce!18693

Fix a couple of things in the security template for developers

See merge request gitlab-org/gitlab-ce!18776

Bump Gitaly to 0.98.0

See merge request gitlab-org/gitlab-ce!18740

Various improvements to repository checks

See merge request gitlab-org/gitlab-ce!18484

Part of https://gitlab.com/gitlab-org/gitaly/issues/1138

Hooks were run for wikis, but given the internal API wasn't responding
failures happended, as seen on:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18693

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

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

New CI Job live-trace architecture (v2)

Closes #44935

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

Only run session related Warden hooks for user scope

Closes gitlab-ee#5857

See merge request gitlab-org/gitlab-ce!18771

Resolve "Vuex actions - How to achieve a better state management"

Closes #44427

See merge request gitlab-org/gitlab-ce!17929

Resolve "Improve Web IDE left panel and modes"

Closes #44846

See merge request gitlab-org/gitlab-ce!18581

Upgrade underscore.js

See merge request gitlab-org/gitlab-ce!18578

Enable prometheus metrics by default

Closes #43660

See merge request gitlab-org/gitlab-ce!18723

Add signature verification badge to compare view

See merge request gitlab-org/gitlab-ce!18245

Resolve "CI retry/cancel job or pipeline redirect the user and can't be open in a new tab"

Closes #33697

See merge request gitlab-org/gitlab-ce!18451

Backport CE changes from "autocomplete usernames in Epic comments/description"

See merge request gitlab-org/gitlab-ce!18605

Remove top margin on the terms page with performance bar

Closes #46064

See merge request gitlab-org/gitlab-ce!18752

For easier overriding methods.