Reduce N+1 queries in MergeRequestsController#ci_environment_status

See merge request gitlab-org/gitlab-ce!30224

Upgrade prometheus-client-mmap to 0.9.7

See merge request gitlab-org/gitlab-ce!30430

Remove a high cardinality Prometheus metric

See merge request gitlab-org/gitlab-ce!30122

Add lint rule that headings must increment one level at a time

See merge request gitlab-org/gitlab-ce!30376

Also fixes instances in Markdown that broke the rule.

Starting a new discussion only on line without Draft note created on it

See merge request gitlab-org/gitlab-ce!30413

- fixed attribute to be not hyphenated
- applied parallel diffs view on CE
- separated left and right drafts
- added fallback for hasDrafts

Remove minimum required characters for fuzzy search if no trigram is used

See merge request gitlab-org/gitlab-ce!29810

As a workaround for https://gitlab.com/gitlab-org/gitlab-ce/issues/64116

Docs: Changing badges to use parentheses not brackets

See merge request gitlab-org/gitlab-ce!30439

Previously, we used brackets to denote the tier badges,
but this made Kramdown, the docs site Markdown renderer,
show many warnings when building the site. This is now
fixed by using parentheses instead of square brackets.

This was caused by [PREMIUM] looking like a link to
Kramdown, which couldn't find a URL there.

See:
- https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/484
- https://gitlab.com/gitlab-org/gitlab-ce/issues/63800

Replace runtime isEE check with compile time one

Closes #60213

See merge request gitlab-org/gitlab-ce!30351

Vue-i18n: autofix for app/assets/javascripts/vue_shared directory

See merge request gitlab-org/gitlab-ce!30287

i18n linting for .vue files under the
app/assets/javascripts/vue_shared directory

Vue-i18n: autofix for app/assets/javascripts/vue_merge_request_widget directory

See merge request gitlab-org/gitlab-ce!30035

i18n linting for .vue files under the
app/assets/javascripts/vue_merge_request_widget directory

Update dependency @gitlab/svgs to ^1.67.0

See merge request gitlab-org/gitlab-ce!30402

Removes EE differences for app/views/admin/users/show.html.haml

Closes gitlab-ee#12533

See merge request gitlab-org/gitlab-ce!30407

Resolve "Removing an image via Web IDE shows binary data"

Closes #60856

See merge request gitlab-org/gitlab-ce!30314

Clusters hierarchy CTE

See merge request gitlab-org/gitlab-ce!30063

- This enables us to use a scope to query all clusters in group
hierarchy order in one query, and also enables us to union to instance
clusters later.

- Handle case where clusters not present at level. In which case the
query should go ahead and return the next level's clusters.

- Swap with new CTE query behind Feature flag. This FF is default
disabled.

Description of the optimized path wildcard

See merge request gitlab-org/gitlab-ce!30082

Docs: Update Jira integration

See merge request gitlab-org/gitlab-ce!29997

Current screenshots are from an older version of Jira and GitLab.

ADD '.git' ending to git clone with CI_JOB_TOKEN for clarity

See merge request gitlab-org/gitlab-ce!30200

Docs: Update redirected links in docs (part 1)

Closes #64225

See merge request gitlab-org/gitlab-ce!30379

First MR in a series updating all redirected links
in CE documentation to the destination URLs

Refactor end-to-end test

See merge request gitlab-org/gitlab-ce!30421

Merge branch 'da-add-note-that-internal-url-work-with-load-balancer-that-terminates-tls-docs' into 'master'

Geo - Add note that Internal URL works only with a Load Balancer with TLS termination

See merge request gitlab-org/gitlab-ce!30372

Also memoize has_metrics? as well, that might be expensive, and it
should not change for the lifetime of EnvironmentStatus

In 12.2 we will remove this fallback.

We stopped calling the fallback so we can remove this now

Split into followup issue

We can now share project so that we don't have to load project twice.
Also, this extracts non-relevant logic out of Deployment.

Update DeploymentsController accordingly

Otherwise, each EnvironmentStatus object instantiates its own project
when really they are the same. Improves query count performance

This improves query performance of
MergeRequestsController#ci_environments_status a lot.

However this means old deployments that deployed to kubernetes clusters
with prometheus installations will no longer show performance metrics as
we cannot backfill cluster_id from deployment_platform with certainty
(clusters may be edited/added/deleted, which changes the results of
deployment_platform).

We have an N+1 problem where N is environments.