Clean up more redirect files

See merge request gitlab-org/gitlab!53195

Add expiry dates to redirects that were missing
them, and delete redirects more than a year old.

Fix kramdown warning on Manage:Access page

See merge request gitlab-org/gitlab!53312

Fix places in merge_request_spec.rb that persist changes to the project

See merge request gitlab-org/gitlab!53196

Escape a square bracket to make Kramdown happy.

Cast incoming access_raw_diffs param to boolean

See merge request gitlab-org/gitlab!53285

Editor Lite: support creation of a DiffInstance

See merge request gitlab-org/gitlab!51470

Move integrations portion of Incident Management docs

See merge request gitlab-org/gitlab!53293

Delete the stub page, so that name is available for reuse.

It's been noticed that we don't need to use this trait, and that the
trait might well be a no-op, or redundant.

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/53196#note_500100273

Update doc/api/project_badges.md

See merge request gitlab-org/gitlab!52193

Applying the method in
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/39996/diffs#note_402591440
to more places in the spec where `subject.project` is mutated.

This is because of the `keep_around` that is applied to projects within
this spec. For any parts of this spec where the merge request project is
mutated we need to be careful to create a new project.

Fix more spelling issues in the docs

See merge request gitlab-org/gitlab!53302

Fix capitalization.
Wrap words in code tags.
Add words to the exceptions list.
Fix misspellings.
Whatever's required.

Track load performance widget expansions via usage ping

See merge request gitlab-org/gitlab!52688

Merge feature branch for Pipeline Editor app refactor

See merge request gitlab-org/gitlab!52200

This refactor will allow the new pipeline editor section
to grow organically from an architectural POV. Each section
is now its own component and at the very top, we have the app
that fetches the graphQL queries and pasases it down to all
other part of the applications that need it.

As per review

As per review

Now we use Proxy pattern instead of a decorator

Done to highlight its boolean nature. As per review

Aslso re-named some functions to match the naming

As per review

As per review

A lot of mocks have been removed

Make sure we dispose the instance model

Return either instance or editor from 'use'

Should be useful for chaining

Make sure the model exists before disposing

Introduced the DiffEditor

Abstracted 'createModel' into a static fn

Allow creation of instances without a model

This is useful for the cases when an extension implements
some custom model generation mechanism (for example with
some decorators)

Correct disposal of the DiffEditor models

Prettified the Editor Lite module

Instruct users to restart application after change

See merge request gitlab-org/gitlab!53289

Fix Style/FrozenStringLiteralComment violations in config*

See merge request gitlab-org/gitlab!52568

Auto-corrected with Rubocop

Pipeline Graph Structural Update: Slidey Bugfix

See merge request gitlab-org/gitlab!53255

Iteration lists frontend

See merge request gitlab-org/gitlab!52178