GET /api/user/recipients

Fetch a list of Users. Returns only active users. Meant for non-admins unlike GET /api/user.

• If user-visibility is :all or the user is an admin, include all users.
• If user-visibility is :group, include only users in the same group (excluding the all users group).
• If user-visibility is :none or the user is sandboxed, include only themselves.