Create dashboards endpoint & setup dashboard post-processing

Closes #60383

See merge request gitlab-org/gitlab-ce!27405

Refactor quarantine helper

See merge request gitlab-org/gitlab-ce!27766

Admin instance level settings for pages Let's Encrypt

See merge request gitlab-org/gitlab-ce!27361

Store Let's Encrypt account email in application settings
Also add explicit terms of service consent

Deployment Chat Notifications

See merge request gitlab-org/gitlab-ce!27338

This enables sending a chat message to Slack or Mattermost
  upon a successful, failed, or canceled deployment

Add rollout type to variables list.

See merge request gitlab-org/gitlab-ce!27757

Prevent text selection when dragging in issue boards

Closes #59378

See merge request gitlab-org/gitlab-ce!27724

Documented the Admin Area's `Dashboard`

See merge request gitlab-org/gitlab-ce!27445

Part of issue 57874

Update GitLab Runner Helm Chart to 0.4.1/11.10.1

See merge request gitlab-org/gitlab-ce!27627

List group name restrictions

Closes #60341

See merge request gitlab-org/gitlab-ce!27609

CI: Fix upload of screenshots in gitlab:ui:visual

See merge request gitlab-org/gitlab-ce!27758

Before this commit uploading of screenshots failed with

    WARNING: tests/__image_snapshots__/: no matching files
    ERROR: No files to upload
    ERROR: Job failed: exit code 1

After this commit it works again

    Uploading artifacts...
    gitlab-ui/tests/__image_snapshots__/: found 90 matching files
    Uploading artifacts to coordinator... ok

Update NFS docs to reflect new Rugged backports

See merge request gitlab-org/gitlab-ce!27632

Add ProjectMetricsDashboardSetting model and table

See merge request gitlab-org/gitlab-ce!27550

This new table will be used to store the external_dashboard_url which
allows users to add a link to their external dashboards (ex Grafana)
to the Metrics dashboard.

By moving methods closer to where they are called.

We backported the Rugged implementations of a Git access to older
versions of GitLab. Update the documentation to reflect this.

Relates to:

* https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/21833/diffs
* https://gitlab.com/gitlab-org/release/tasks/issues/749

Backport Environments Dashboard SCSS Changes

See merge request gitlab-org/gitlab-ce!27498

Move all static fixtures to static directory

See merge request gitlab-org/gitlab-ce!27668

Add ZAP Full Scan support to DAST vendored template

See merge request gitlab-org/gitlab-ce!27513

Fix #57351 - Add .NET Core YAML template

Closes #57351

See merge request gitlab-org/gitlab-ce!25604

Fix reference-style links in CI predefined vars

See merge request gitlab-org/gitlab-ce!27584

Quarantine flaky tests

See merge request gitlab-org/gitlab-ce!27732

Add changelog for adding .NET Core YAML template

Improve indent for cache paths

Refactor operations controller spec

Closes #57171

See merge request gitlab-org/gitlab-ce!27558

Make stylelint config a valid JSON file

See merge request gitlab-org/gitlab-ce!27721

Revert "Merge branch '60855-mr-popover-is-not-attached-in-system-notes' into 'master'"

See merge request gitlab-org/gitlab-ce!27727

Use constants for asserstion for helm chart test

See merge request gitlab-org/gitlab-ce!27629

This reverts merge request !27589

Improve Review Apps scheduled cleanup

See merge request gitlab-org/gitlab-ce!27689