Removes EE differences for wells.scss

Closes gitlab-ee#10568

See merge request gitlab-org/gitlab-ce!26585

Docs: Fix redirected link to be more direct

Closes #58620

See merge request gitlab-org/gitlab-ce!26081

Port of 51988-install-group-runner-on-group-cluster to EE

See merge request gitlab-org/gitlab-ee!10415

A runner installed on a cluster will now use the
cluster's `cluster_type` as its `runner_type`.

Support installing Group runner on group-level cluster

Closes #51988

See merge request gitlab-org/gitlab-ce!26260

A runner installed on a cluster will now use the
cluster's `cluster_type` as its `runner_type`.

Expand resolved discussion when linking to a comment in the discussion

Closes #59352

See merge request gitlab-org/gitlab-ce!26483

[EE-port] Expand resolved discussion when linking to a comment in the discussion

See merge request gitlab-org/gitlab-ee!10378

Enrich commits with full data in CommitCollection

Closes #58805

See merge request gitlab-org/gitlab-ce!26445

Enrich commits with full data in CommitCollection (EE)

Closes gitlab-ce#58805

See merge request gitlab-org/gitlab-ee!10359

Fix url property format in urls.yml file

See merge request gitlab-org/gitlab-ce!26484

Move EE-specific code in destroy_pipeline_service_spec.rb

See merge request gitlab-org/gitlab-ee!10418

Clear pipeline status cache after destruction of pipeline

Closes #59453

See merge request gitlab-org/gitlab-ce!26575

Introduce the Insights controllers

Closes #10421 and #9867

See merge request gitlab-org/gitlab-ee!9776

Resolve "Extended tooltip for merge request links"

Closes #54916

See merge request gitlab-org/gitlab-ce!25221

Ee 54916 extended tooltip for merge request links

See merge request gitlab-org/gitlab-ee!9859

- Show pipeline status, title, MR Status and project path
- Popover attached to gitlab flavored markdown everywhere, including:
  + MR/Issue Title
  + MR/Issue description
  + MR/Issue comments
  + Rendered markdown files

Extract Components to Reuse in Other Dashboards

See merge request gitlab-org/gitlab-ee!10348

Pulls out the components for alerts, project search, project pipelines,
and a new one for time stamps.

Replace environments dropdown with gitlab ui dropdown

See merge request gitlab-org/gitlab-ce!26386

Change environments dropdown to use gitlab-ui

See merge request gitlab-org/gitlab-ee!10354

Removes EE differences for milestone.scss

See merge request gitlab-org/gitlab-ce!26558

EE: Removes EE differences for milestone.scss

Closes #10648

See merge request gitlab-org/gitlab-ee!10412

Stylelints for duplicate selectors and using BS4 classes

See merge request gitlab-org/gitlab-ce!26409

DRYed the code

Changed new rules to warnings

Manual prettified and added stylelint rules

`project.pipeline_status.has_status?` is cached, which can lead to Error
500s in the UI if the this condition is used to check whether a pipeline
exists for a commit. We now expire the cache to ensure that the
information is consistent.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/59453