**As** an OpenProject user
**I want** to be able to limit the visibility of work packages to users and groups which I specify
**so that** I can have private work packages.

**Acceptance criteria** Begin of the insertion

* Restrict WorkPackage visibility by role, independend of project (see Redmine screenshot for Roles configuration)
* End of the insertion Begin of the deletion

-End of the deletion When creating / updating a work package it should be possible to specify which users should be able to see a work package. Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Private tickets cannot be seen by users who are not allowed to see them: Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Not shown in work package list Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Links to those work packages (e.g. via Wiki syntax) are not functional Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Related work packages, parent Begin of the insertion&End of the insertion Begin of the deletion &End of the deletion child work packages which are private are not shown