Fix Status Page active status and remove unused StatusPageSetting

See merge request gitlab-org/gitlab!29836

Resolve "Failing spec ee/spec/requests/api/group_milestones_spec.rb"

Closes #214891

See merge request gitlab-org/gitlab!29841

Docs: update links to use standard style

See merge request gitlab-org/gitlab!29837

GitLab style disallows the use of reference-style links.

Docs: Removed reflinks

See merge request gitlab-org/gitlab!29840

Related to https://gitlab.com/gitlab-org/gitlab/-/issues/212770

Remove milestones_in_roadmap feature flag

See merge request gitlab-org/gitlab!29641

In
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/28966
we've removed the beta feature flag to make Status Page
generally available.

Thereafter, in
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/29655
we've moved StatusPageSetting to StatusPage::ProjectSetting.

Apparently, we've missed to remove this model and just added
`StatusPage::ProjectSetting`.

Addionally, due to a wrong resolution of a merge conflict we've
added back the beta feature flag to the new model
StatusPage::ProjectSetting. This made the Status Page setting page
behave weirdly: It showed up but users weren't able to activate.

This commits fixes both issues:
* Remove unused StatusPageSetting model
* Remove beta feature flag from StatusPage::ProjectSetting

Fix typos in offline doc for DS

See merge request gitlab-org/gitlab!29749

- Add link to ds instructions from main offline doc
- Add maven variable to ds instruction

Docs: Removed ref links

## What does this MR do?

Removes ref links because we are switching to inline links.

## Related issues

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/212770

## Author's checklist

- [x] Follow the [Documentation Guidelines](https://docs.gitlab.com/ee/development/documentation/) and [Style Guide](https://docs.gitlab.com/ee/development/documentation/styleguide.html).
- [x] If applicable, update the [permissions table](https://docs.gitlab.com/ee/user/permissions.html).
- [x] Link docs to and from the higher-level index page, plus other related docs where helpful.
- [x] Apply the ~documentation label.

## Review checklist

All reviewers can help ensure accuracy, clarity, completeness, and adherence to the [Documentation Guidelines](https://docs.gitlab.com/ee/development/documentation/) and [Style Guide](https://docs.gitlab.com/ee/development/documentation/styleguide.html).

**1. Primary Reviewer**

* [ ] Review by a code reviewer or other selected colleague to confirm accuracy, clarity, and completeness. This can be skipped for minor fixes without substantive content changes.

**2. Technical Writer**

* [ ] Optional: Technical writer review. If not requested for this MR, must be scheduled post-merge. To request for this MR, assign the writer listed for the applicable [DevOps stage](https://about.gitlab.com/handbook/product/categories/#devops-stages).

**3. Maintainer**

1. [ ] Review by assigned maintainer, who can always request/require the above reviews. Maintainer's review can occur before or after a technical writer review.
1. [ ] Ensure a release milestone is set.
1. [ ] If there has not been a technical writer review, [create an issue for one using the Doc Review template](https://gitlab.com/gitlab-org/gitlab/issues/new?issuable_template=Doc%20Review).

See merge request gitlab-org/gitlab!29832

Removed ref links

See merge request gitlab-org/gitlab!29827

GitLab style advises against reference-style links.

Update the offline docs to mention solutions

See merge request gitlab-org/gitlab!29078

Move monitoring dashboard vue files to Core

See merge request gitlab-org/gitlab!29789

Move files in ee/app/assets/javascripts/monitoring/ to Core since
Custom metrics and Alerting has been moved to Core.

Merge branch '202037-geo-ssh-clone-pull-redirect-to-primary-when-selective-sync-enabled-and-project-not-selected' into 'master'

Geo: Proxy SSH git operations for repositories that are not yet replicated

Closes #202037

See merge request gitlab-org/gitlab!27994

Add Fluentd into cluster apps page

See merge request gitlab-org/gitlab!28847

Fluentd with port, host and protocol
as settings which can be updated

Add note about automatic bucket creation

See merge request gitlab-org/gitlab!29602

Merge branch '18140-add-to-next-and-previous-commit-buttons-when-viewing-commits-in-merge-request-3' into 'master'

Clean up & Re-arrange the keyboard shortcuts modal

See merge request gitlab-org/gitlab!28992

Replace underscore with lodash

See merge request gitlab-org/gitlab!29619

Fix bug creating project from git push through ssh

Closes #214714

See merge request gitlab-org/gitlab!29771

Avoid commit when snippet file_name and content are not present

Closes #214683 and #214692

See merge request gitlab-org/gitlab!29761

Drop x-y-stable Secure image pinning

See merge request gitlab-org/gitlab!29603

Add terraform_reports endpoint to MergeRequestsController

See merge request gitlab-org/gitlab!29088

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/207527

Speed up runners API specs

See merge request gitlab-org/gitlab!29792

Fix requirements permission documentation

See merge request gitlab-org/gitlab!29714

Add compliance framework setting documentation

See merge request gitlab-org/gitlab!29570

Add Public API for Feature Flag User Lists

See merge request gitlab-org/gitlab!29415

Add AtomicInternalId for model