CE Port of Update feature flag UI to support percentage rollout

See merge request gitlab-org/gitlab-ce!31240

Fix first-time contributor notes not rendering

Closes #65383

See merge request gitlab-org/gitlab-ce!31340

Add prometheus listen address to whitelist

See merge request gitlab-org/gitlab-ce!31148

- Add to whitelist so that even if local requests from hooks and
services are not allowed, the prometheus manual configuration will
still succeed.

Remove the warning style from the "U2F device message" paragraph

Closes #61776

See merge request gitlab-org/gitlab-ce!30119

This commit updates the feature flags pages to includes support for the
percentage rollout strategy.

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/31117 enabled the
HashInefficientHash Rubocop rule that was fooled by the special
implementation of `SpecialRole`. We fix this by introducing a
`value?` method and adding unit tests.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/65383

For milestone filters, treat `Any` as `No filter`

See merge request gitlab-org/gitlab-ce!30613

- DB migration of board milestone values
- issue finder & spec updates

Add project scope to live trace feature flag

See merge request gitlab-org/gitlab-ce!31325

Fix sidekiq memory killer warning message

Closes gitlab-com/gl-infra/infrastructure#7371

See merge request gitlab-org/gitlab-ce!31264

Propagate argument errors as execution errors

See merge request gitlab-org/gitlab-ce!31249

Adds Sidekiq scheduling latency structured logging field

Closes #64649

See merge request gitlab-org/gitlab-ce!30784

Check for dependency job stage index before comparison

Closes #59366

See merge request gitlab-org/gitlab-ce!31116

Default dependency job stage index to Infinity, and correctly report it as undefined in prior stages

Resolve "Kubernetes > Applications > Uninstall Knative"

See merge request gitlab-org/gitlab-ce!30458

- After uninstalling the knative helm chart it's necessary to also
remove some leftover resources to allow the cluster to be clean
and knative to be reinstalleable.
- Adds knative uninstall disclaimer
- Uninstall ksvc before uninstalling knative

Make list of Knative and Ingres resources explicit

- To avoid deleting unwanted resources we are listing exact
which resources will be deleted rather than simply deleting any
resource that contains istio or knative words.

Fix Danger finding a test reviewer

Closes #65317

See merge request gitlab-org/gitlab-ce!31292

Add edit_note helper method

See merge request gitlab-org/gitlab-ce!31235

Fix whitespace in topic, university, workflow docs

See merge request gitlab-org/gitlab-ce!30603

Many code blocks are 4spaced, and they render in GitLab
without coloring as a result, even though they are
fenced with a language label. If in a list, other items
will render as being in a code block too, even if not
meant to. This fixes all these issues, and cleans up
minor white space issues in /topic, /university, /update
and /workflow docs.

Docs: update time tracking doc

See merge request gitlab-org/gitlab-ce!30890

- CORE ONLY badge
- Link 'introduced in' note
- Inline linking

Use file-loader for sprite icons within icon.vue

See merge request gitlab-org/gitlab-ce!31257

Help user to know what to do when deploying to cluster

Closes #58947

See merge request gitlab-org/gitlab-ce!31318

Add project scope

Move version info for Geo

See merge request gitlab-org/gitlab-ce!31269

Fix whitespace in dev docs

See merge request gitlab-org/gitlab-ce!30599

Many code blocks are 4spaced, and they render in GitLab
without coloring as a result, even though they are
fenced with a language label. If in a list, other items
will render as being in a code block too, even if not
meant to. This fixes all these issues for most docs in
/development, and cleans up other whitespace issues too

Update gitlab-styles to close #54853

Closes #54853

See merge request gitlab-org/gitlab-ce!31155

Change validations to allow blank but not allow nil

See merge request gitlab-org/gitlab-ce!31133

- The most common use case for qualified_domain_validator currently is
to allow blank ([]) but not allow nil. Modify the
qualified_domain_validator to support this use case.

Ensure default metrics embed is cached

See merge request gitlab-org/gitlab-ce!31157

Remove unused cluster configuration logic

See merge request gitlab-org/gitlab-ce!25725