Absorb gitlab_git

Closes #24374

See merge request !8447

UX Guide: add section on search box

See merge request !8429

UX Guide: Add new primary and secondary text colors

See merge request !8449

Explain why we have this monkey-patch

See merge request !8329

Add API route slack slash commands

Closes #25954

See merge request !8362

Removes invalid html and unneeded CSS to prevent shaking in the pipelines tab

Closes #26278

See merge request !8411

Terminal: Add TextEncoder and TextDecoder in terminal bundle.

Closes #25977

See merge request !8450

Fix ImplicitDiv Haml lint failure

See merge request !8441

Clarify git housekeeping

See merge request !8373

Properly handle failed reCAPTCHA on user registration

See merge request !8403

Add email confirmation field to registration form

Closes #3053

See merge request !7432

Remove unused `Project#web_url_without_protocol` method

See merge request !8416

Review commits and commit scss

See merge request !8010

Refactor issues filter in API

See merge request !8432

Add changelog entry for renaming API param

See merge request !8433

Fix project hooks params

Closes #26291

See merge request !8425

Gitlab::LDAP::Person uses LDAP attributes configuration

Closes #26290

See merge request !8418

Resolves overflow of dropdown text for long branch name

Closes #25580

See merge request !8118

Merge branch '25836-changing-from-version-in-diff-comparison-does-not-preserve-to-version' into 'master'

Resolve changing "from" version in diff comparison does not preserve "to" version

Closes #25836

See merge request !8328

We allow users to configure LDAP attribute preferences. For example,
email can be configured to use `mail`, `email` and `userPrincipalName`,
falling through to the next until a value is found. Prior to this
change, Gitlab::LDAP::Person did not honor this configuration. Now,
the class will honor `name` and `mail` configuration. It does not
handle `username`, or fallback to `first_name` + `last_name` in the
absence of `name`.

Resolve "Label autocomplete doesn't handle spaces after `~~`"

Closes #25964, #22058, and #23578

See merge request !8254

Disable award emoji button but display tooltip

Closes #26168

See merge request !8382

Removed bottom padding from merge manually from CLI because of repositioning award emoji's

See merge request !8398

Fixed regression of note-headline-light where it was always placed on 2 lines, e…

See merge request !8348

Use stable icon for Mattermost integration

See merge request !8252

Revert specific URL

See merge request !8321

Copy, don't move uploaded avatar files

Closes #26158

See merge request !8396

Fix cross-project references copy to include the project reference

Closes #25890

See merge request !8232

Remove bottom border from Issuable titles

See merge request !8278