Use absolute paths for SCSS imports

See merge request gitlab-org/gitlab-ce!30161

Also:
- stub MutationObserver in Jest

A recent update in [GitLab UI] and setting the [config.assets.paths] to
include `node_modules` for the resolution of SCSS imports, allows us to
have much nicer imports which don't rely on brittle relative paths.

This change also forwards @gitlab/ui to the newest version

[GitLab UI]: https://gitlab.com/gitlab-org/gitlab-ui/merge_requests/602
[config.assets.paths]: https://gitlab.com/gitlab-org/gitlab-ce/blob/d9026d0ffa0/config/application.rb#L169

Revert "Merge branch '62722-boot-app-in-ci-and-check-memory' into 'master'"

Closes gitlab-ee#12491

See merge request gitlab-org/gitlab-ce!30182

This reverts merge request !30031

Moves EE differences for app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue

Closes gitlab-ee#10087

See merge request gitlab-org/gitlab-ce!30127

Use GraphQL API to fetch last commit data

See merge request gitlab-org/gitlab-ce!29934

Monitor database transaction activity for Rails

See merge request gitlab-org/gitlab-ce!29928

CE port of "Fix project template spec"

See merge request gitlab-org/gitlab-ce!30152

Update issue workflow for subject labels

See merge request gitlab-org/gitlab-ce!30164

Update prometheus-client-mmap to 0.9.6

Closes #63872

See merge request gitlab-org/gitlab-ce!30165

Fix typo in code comments about Elasticsearch

See merge request gitlab-org/gitlab-ce!30163

Replace 'JIRA' with 'Jira'

Closes #63479

See merge request gitlab-org/gitlab-ce!29849

https://community.atlassian.com/t5/Jira-questions/Is-it-quot-JIRA-quot-or-quot-Jira-quot/qaq-p/681163Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Get memory data after booting app in production

Closes #63585

See merge request gitlab-org/gitlab-ce!30031

Doc backport: Add `/relate` quick action

See merge request gitlab-org/gitlab-ce!29803

Mentions the automatic inference of stage and group labels based
on the applied subject labels

added code difference in `app/views/search/_category.html.haml` from EE to CE

See merge request gitlab-org/gitlab-ce!28755

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

CE port of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14108

See merge request gitlab-org/gitlab-ce!29604

Preload the app in `production` env, hit it with a single request, and
gather total gem memory consumption data using `derailed exec perf:mem`
from `derailed_benchmarks`. Present the result as MR metrics.

Currently we don't have good insight into the affect of Rails
transaction blocks on the application. If these blocks are held open for
extended periods, they can have detrimental effects on the application.

This change will allow us to track these transactions, with the aim
of reducing their duration.

Set higher TTL to write lock for traces

See merge request gitlab-org/gitlab-ce!30064

Document the security tools maintenance and vulnerabilities DB update

Closes gitlab-ee#9986

See merge request gitlab-org/gitlab-ce!29840

Support CIDR notation in IP rate limiter

See merge request gitlab-org/gitlab-ce!30146

Added commit type to tree GraphQL type

See merge request gitlab-org/gitlab-ce!29412

Extract MR's widget into a separate request

Closes #62723

See merge request gitlab-org/gitlab-ce!29979

Do not change updated_at on an issue when reordering on an issue board

See merge request gitlab-org/gitlab-ce!29677

Backport CE changes for multiple GroupSAML support

See merge request gitlab-org/gitlab-ce!30102

Resolve "Environment details header border misaligned"

Closes #62968

See merge request gitlab-org/gitlab-ce!30011

CE backport for gitlab-org/gitlab-ee!11859: Update description text of "Merge requests" section of general project settings page

See merge request gitlab-org/gitlab-ce!27838

Removes EE differences for app/views/projects/tree/_tree_header.html.haml

See merge request gitlab-org/gitlab-ce!30117