CE backport of design-management-issue-tab

See merge request gitlab-org/gitlab-ce!25429

Fail for unmocked axios requests in Jest

Closes #33715

See merge request gitlab-org/gitlab-ce!23965

Remove feature_flags_environment_scope feature flag

Closes #9763

See merge request gitlab-org/gitlab-ee!9588

Use gitlab-ui's GlFormRadioGroup component

Closes #9656

See merge request gitlab-org/gitlab-ee!9526

Document active param for JIRA service API

See merge request gitlab-org/gitlab-ce!25282

Separate spyOnDependency docs examples

See merge request gitlab-org/gitlab-ce!25449

Docs - Reorganize incoming email doc

See merge request gitlab-org/gitlab-ce!25409

Configuration examples were moved into their own section for the purpose
of organizing and being able to link directly.

Add note on configuring an external Redis Sentinel instance

See merge request gitlab-org/gitlab-ce!25436

Adding password in the Redis Sentinel config does not actually work
because v3.2.x doesn't respond to the `AUTH` command.

This came up in
https://gitlab.com/gitlab-org/omnibus-gitlab/issues/4126.

Docs: Move chatops docs from EE to core

See merge request gitlab-org/gitlab-ce!25324

ChatOps used to be in the Ultimate tier.

Docs: Port "Move chatops docs from EE to core" to EE

See merge request gitlab-org/gitlab-ee!9586

Docs: document upgrade k8s apps

See merge request gitlab-org/gitlab-ce!25323

Clarify that Owners have permissions to change visibility.

See merge request gitlab-org/gitlab-ce!25356

Team Member Removed: "project_access" changed to "access_level".  Team Member...

See merge request gitlab-org/gitlab-ce!25306

Remove the feature flag as we confirmed the feature is
deemed stable.

Fix pot

Remove feature flag from frontend

Remove unnecessary partial

Fix

Move language setting to preferences

Closes #35638

See merge request gitlab-org/gitlab-ce!25427

Template and process improvements for documentation

See merge request gitlab-org/gitlab-ce!24315

Port of move_chatops_to_core to EE

See merge request gitlab-org/gitlab-ee!9350

Move ChatOps to Core

See merge request gitlab-org/gitlab-ce!24780

ChatOps used to be in the Ultimate tier.