Use `:empty_project` where possible in helper specs

See merge request !8796

Use `:empty_project` where possible in controller specs

See merge request !8797

Use `:empty_project` where possible in finder specs

See merge request !8794

Use hashrocket for dasherized attribute

Closes #27203

See merge request !8775

[ci skip]

Resolve "regression in commit title bar"

Closes #27013

See merge request !8751

Resolve "Branch index delete button inconsistently spaced and misaligned"

Closes #24895

See merge request !8646

Display project ID

Closes #18350

See merge request !8572

Fix access to the wiki code via HTTP when repository feature disabled

Closes #26518

See merge request !8758

Copying a rendered issue/comment will paste into GFM textareas as actual GFM

See merge request !8597

Color + and - signs in diffs to increase code legibility

Closes #26186

See merge request !8768

Resolve "Line numbers now in copy pasta data"

Closes #27021

See merge request !8706

Fix race conditions for AuthorizedProjectsWorker

Closes #26194 and #26310

See merge request !8701

[ci skip]

Fixed label select toggle not updating correctly

Closes #26119

See merge request !8601

Fix autocomplete initial undefined state (loading)

Closes #26775

See merge request !8667

Prevent removal of input that is the parent dropdown element

Closes #25312

See merge request !8397

Fix CI requests concurrency

See merge request !8760

Backport changes introduced by https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1078

See merge request !8657

# Conflicts:
#	app/assets/javascripts/lib/utils/common_utils.js.es6

Fix mini-pipeline stage tooltip text wrapping

Closes #27014

See merge request !8771

Display fullscreen button on small screens

Closes #19891

See merge request !5302

Otherwise Ruby 2.1 is not happy.
Signed-off-by: Rémy Coutable <remy@rymai.me>

EE backport for new application settings update service

See merge request !8665

Fix spec failure due to timestamp ordering issue in mySQL

Closes #26622

See merge request !8778

Fix 500 error for Group#web_url method if nested group

See merge request !8743

Nested groups feature improvemetns

See merge request !8448