- Required on the GitLab Rails side is mostly authentication and API related.

Also streamline the sorting part while we're at it.

That being done, there's currently a duplication between
`GET /projects/search/:query` and `GET /projects?search=:search`
so we might want to keep only the latter for 9.0...
Signed-off-by: NRémy Coutable <remy@rymai.me>

Use NotificationSetting::EMAIL_EVENTS for params

Browser interface allows forking to an owned grup.
This commit brings API up to speed by providing optional namespace
parameter to fork API. This allows forking to users and groups under
forker's control using their id or unique name.

Fixes #21591

Fixes #20456.

- This would allow anyone with a personal access token (even a read-only
  token, once scopes are implemented) to escalate their access by
  obtaining the private token.

adds test to check whether or not an email is sent to label subscribers after creating a new issue through the api

prevent authored awardable thumbs votes

prevent authored awardable thumbs votes

Closes #21043