CE part of https://gitlab.com/gitlab-org/gitlab-ee/issues/1294

Add a system hook for when a project is updated.

See merge request !5711

make a note to highlight 2FA needs time sync'd

See merge request !8810

Remove "official merge window" from CONTRIBUTING.md [ci skip]

See merge request !8816

We should not discourage contributors from submitting merge requests
anytime they want. Our process for reviewing community contributions
no longer depends on the release schedule.

add an other ldap configuration example

See merge request !6773

Added recommendation to install github-markdown

See merge request !8103

Gitlab from sources : proper utf8mb4 support for MySQL 5.5 to 5.7

See merge request !8508

Fix typo in examples

See merge request !8530

Update enviroments.md API docs

The example for deleting an environment is missing the "s" in environments

See merge request !8485

This sends a project_update hook when a repo is updated.  This does not include
renaming or transferring a project.  Those are covered by project_rename and
project_transfer.  This will get called, however, when the visibility is
changed.

Ensure we have a project with a repo in GitlabMarkdownHelper specs

Closes #27285

See merge request !8806

Update CONTRIBUTING.md after merging "up-for-grabs" and "Accepting Merge Requests"

See merge request !8802

Use `:empty_project` where possible throughout spec/lib

See merge request !8767

Signed-off-by: Rémy Coutable <remy@rymai.me>

Fixed builds info link on project settings page

Closes #27178

See merge request !8762

don’t count tasks that are not defined as list items correctly

Closes #26068

See merge request !8526

This reverts commit e9d8fc94.

Encoding.default_external was chosen over
Encoding.default_internal because File.read is
returning Encoding.default_external, therefore
we should align with it. Alternatively, we could
force both of them to be Encoding.default_internal.

However, ideally this should be determined by different
projects. For example, some projects might want to use
an encoding different to what GitLab is using.

This might not happen soon though.

Closes #27052

Factories with a project association use `:empty_project` by default

See merge request !8770

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