Only show Merge Request button when user can create a MR

See merge request !8639

Support notes without a project (personal snippets notes)

See merge request !8468

Grapify last endpoint of the branches API

See merge request !8755

`can?` already includes the `feature_available?` check, so no need to
check this again.

In case Merge Requests are disabled on the project, no one should see
the Merge Request button.

The project was not public and this caused a 404. So the tests were
giving deceiving results.

By searching for the Merge Request button in `#content-body` this
is overcome, and also other Merge Request buttons (e.g. in the
sidebar) are ignored.

Make diff discussions more reliable

Closes #23646

See merge request !8378

Only render the list if it is visible

See merge request !8710

Fixed keyboard navigation not working in filtered search bar

Closes #26840

See merge request !8656

Add redis version to info rake task

See merge request !8283

Add an eslint rule to flag extra newlines

See merge request !8137

Create a util for normalizing headers on the frontend

See merge request !8750

Fixed tab index order on branch commits list page

Closes #26447

See merge request !8489

Add metric initializer spec

See merge request !8714

Resolve "Reveal Variables button may overrun width of screen"

Closes #25780

See merge request !8221

Fixing sort of Users so that users who never logged in will be displayed last

Closes #26468

See merge request !8637

adds avatar for discussion note

Closes #26854

See merge request !8734

fix broken image when doing offline update check(help page)

Closes #25982

See merge request !8355

Update buttons on pipelines page to be more accessible

Closes #26445

See merge request !8561

Make the time estimate migrations reversible

See merge request !8749

Dont persist application settings in test env

See merge request !8715

Fix nested tasks in ordered list

Closes #24923

See merge request !8626

Fix typo in link to "Services Templates" page.

See merge request !8709

Add docs for resolve conflicts editor

See merge request !8748

[ci skip]

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

Merge the two 2FA docs into one

See merge request !8747

[ci skip]

An empty file in one of the instrumented directories will cause the app
to fail to start when metrics are enabled. Metrics aren't enabled by
default in development or test.

We could handle the empty file case explicitly, but a file could still
not define the constant it is expected to, so instead run the
initializer manually in a spec and check that it succeeds.