Optional global invite code

[techAPJ (Arpit Jalan)]

We now have this feature:

(Superseded) Multiple Use Invite Links

This content is now covered in Configure how users can create and send invites for others to join your community We have improved the core invite system in Discourse 2.5 to add a new feature – Invite Links. Invite Links can be used multiple times and is not tied to an email. Only staff users (admins and moderators) can create multiple use invite links. Creating Invite Link Invite links can be created from /my/invited page by clicking on + Send Invite button → “Mu…