Clean Sidekiq metrics from multiproc dir on start

See merge request gitlab-org/gitlab-ce!31855

After moving the multiproc dir cleanup into `config.ru`:`warmup`, we
stopped cleaning Sidekiq metrics dir which is not correct.
This MR intended to fix that. More details:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/31668

Merge branch '64630-add-warning-to-pages-domains-that-obtaining-deploying-ssl-certificates-through-let-s-encrypt-can-take-some-time' into 'master'

Resolve "Add warning to pages domains that obtaining/deploying SSL certificates through Let's Encrypt can take some time"

See merge request gitlab-org/gitlab-ce!31765

Remove active_record_sane_schema_dumper gem

Closes #66192

See merge request gitlab-org/gitlab-ce!31963

Update Team labels definition in the Issue Workflow documentation

See merge request gitlab-org/gitlab-ce!31811

Signed-off-by: Rémy Coutable <remy@rymai.me>

* Refactor some tests as well

We don't need this since this is already the default
behavior of Rails since 5.1

Stage card ui component

See merge request gitlab-org/gitlab-ce!31580

The existing stage list items are rendered
in haml, migrating them to vuejs for future
work.

Fix alignment of median value

Test for stage_nav_item.vue

Link to GitLab Performance Monitoring

See merge request gitlab-org/gitlab-ce!31947

Improve new CI job permissions model docs

See merge request gitlab-org/gitlab-ce!30696

Docs fixup: Remove reference to old lib/api/ci dir

See merge request gitlab-org/gitlab-ce!31937

Add `be_like_time` matcher to Testing Styleguide

See merge request gitlab-org/gitlab-ce!31833

Link more issues in Design Management Limitations

See merge request gitlab-org/gitlab-ce!31697

Add Documentation for Feature Flag Target Users

Closes gitlab-ee#11459

See merge request gitlab-org/gitlab-ce!31918

Add screenshot

Migrate cycle analytics topic to new section

See merge request gitlab-org/gitlab-ce!31827

Also fixes links to new section and refactors some existing content
for the GitLab 12.2 changes.

Fix pipelines not always being created after a push

Closes #66196

See merge request gitlab-org/gitlab-ce!31927

Update docs jira service page screenshot

Closes #64778

See merge request gitlab-org/gitlab-ce!31911

Update doc/user/project/integrations/jira.md, doc/user/project/integrations/img/jira_service_page_v12_2.png files
Deleted doc/user/project/integrations/img/jira_service_page.png

Escape vertical bars inside code blocks in quick_actions.md

See merge request gitlab-org/gitlab-ce!31556

Escape vertical bars inside code blocks in quick_actions.md - Markdown parsing in previews and Gitlab.com appear to parse these as table delimiters even when inside a code block.

Update screenshot to fix bad html

Closes #63920

See merge request gitlab-org/gitlab-ce!31889

Fix required runner permissions

Closes #52513

See merge request gitlab-org/gitlab-ce!31598

Docs: Improve clarity of SCIM workflow

Closes #65097

See merge request gitlab-org/gitlab-ce!31881

Quarantine failing test

See merge request gitlab-org/gitlab-ce!31943

Improve docs for cross-project MR dependencies

Closes gitlab-ee#12980

See merge request gitlab-org/gitlab-ce!31904

Addressing a documentation review by Marcia!

Docs: Refresh CI quick start screenshots

See merge request gitlab-org/gitlab-ce!31877

Remove MySQL references from development docs

See merge request gitlab-org/gitlab-ce!31712

Mentions `auth.log` on Rate limit docs

See merge request gitlab-org/gitlab-ce!31906

Requests over the rate limit are logged into `auth.log`

Update srmX configuration description

See merge request gitlab-org/gitlab-ce!31142