This is needed to support instance-level integrations alongside service
templates.

We want to make sure that we always have the correct state in the
database. This commit is adding the following validations:
- Validates presence of project_id if not instance
- Validates absence of project_id if instance
- Validates only one instance-level service per type
- Validates service is instance or template

Show memory on clusters list

See merge request gitlab-org/gitlab!26781

Update table layout for mobile - tablet view-ports

See merge request gitlab-org/gitlab!26479

Optimize ci_pipeline counters

See merge request gitlab-org/gitlab!26774

Add GraphQL migration to set epic of an issue

Closes #36309

See merge request gitlab-org/gitlab!25628

Frontend skeleton for Group-level activity overview

See merge request gitlab-org/gitlab!26649

Improve migration doc around passing artifacts

See merge request gitlab-org/gitlab!26878

Add specs testing ProjectAuthorization for unapproved user

See merge request gitlab-org/gitlab!25886

Improve migration docs around manual gates

See merge request gitlab-org/gitlab!26874

Update rouge to 3.17

See merge request gitlab-org/gitlab!26957

Improve migration docs around rules syntax

See merge request gitlab-org/gitlab!26875

Link to pipeline architectures

See merge request gitlab-org/gitlab!26867

Merge branch '208262-follow-up-from-add-unscanned-projects-vuex-module-move-helper-into-shared-utils-folder' into 'master'

Add "isValidDate" function to date-utils

Closes #208262

See merge request gitlab-org/gitlab!26461

Improve migration docs around parallelization

See merge request gitlab-org/gitlab!26876

- Render app with empty container

Status page settings

See merge request gitlab-org/gitlab!25820

Resolve "Start code review on assigning a MR to someone other than the author"

Closes #205597

See merge request gitlab-org/gitlab!26891

Replace underscore for lodash in mr_widget

Closes #196680

See merge request gitlab-org/gitlab!26814

Fix overflow:ellipsis for groups list

See merge request gitlab-org/gitlab!26807

Improve documentation around triggering pipelines

See merge request gitlab-org/gitlab!26880

Add link to community forum for migration guide

See merge request gitlab-org/gitlab!26882

Change introduction wording

See merge request gitlab-org/gitlab!26916

Add "GitLab for Jenkins Users" context to migration doc

See merge request gitlab-org/gitlab!26893

API endpoint to list deploy tokens in a group

See merge request gitlab-org/gitlab!25219

Upgrade ActiveSupport in QA

See merge request gitlab-org/gitlab!26752

Fix docs-lint job that was missing half the docs

See merge request gitlab-org/gitlab!26951

Partly support `monaco-editor` in Jest

See merge request gitlab-org/gitlab!26396