There are two problems in the current implementation:

1. If a project is marked for deletion via the `pending_delete` flag
and then the namespace was quickly deleted, it's possible that the
namespace skips over that project and leaves that project in
an orphaned state.

2. Before namespace deletion, the namespace attempts to clean up
all the relevant storage paths. However, if all projects have been
removed synchronously, then the namespace will not be able to clean anything.
To prevent this, we should load the paths to be deleted before
actually destroying projects.

The specs were missing this second case due to a permission issue
that caused project removal never to happen.

Make Karma output look nicer for CI

See merge request !9165

Clean up terms used for issues. Use New instead of Add.

See merge request !9281

style links on system notes to look clickable

Closes #27959

See merge request !9251

Fix most of broken docs links

See merge request !9275

Change wording of MR comment box

See merge request !9193

[ci skip]

Move tag services to `Tags` namespace

See merge request !9231

Fix Rubocop offense

See merge request !9274

Fix regression where cmd-click stopped working for todos and merge request tabs

Closes #27922

See merge request !9115

Resolve 'Alphabetically sort tags on runner list'

Closes #27409

See merge request !8922

Remove deprecated CI service

Closes #28094

See merge request !9221

Specify that only project owners can transfer a project

Closes #26651

See merge request !9262

Add missing api entities

Closes #23895

See merge request !7138

Only load istanbul plugin in development mode

See merge request !9261

Stop Pikaday using moment

See merge request !9244

Show notifications settings even when repository feature is disabled

See merge request !9180

# Conflicts:
#   db/schema.rb

Fix labels being applied to wrong merge requests on GitHub import

See https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2064

Fix for XSS vulnerability in SVG attachments

See https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2059

Fix XSS in rdoc and other markups

See https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2058

Add sanitization filter to asciidocs output to prevent XSS

See https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2057

Centers loading icon vertically and horizontally in pipelines table in commit view

Closes #28229

See merge request !9256

[skip ci]

Layout alignment fix in new project and edit project screen

See merge request !9201

Disable invalid service templates

Closes #25112

See merge request !8850

Rename builds to jobs in docs

See merge request !9204

Fix stray pipelines API request when showing MR

Closes #27925

See merge request !9213

[ci skip]

Don't ignore the parameter of MergeRequestsHelper#mr_change_branches_path

See merge request !9223

Nested groups improvements pt 3

See merge request !9227