Some proposed improvements to user invites

Does @techAPJ change cover you?

This way you would:

  1. Create a topic in your private category
  2. Create a csv specifying the email/group/topic_id
  3. Each user would get a customised invite to the topic (our standard one that includes the first para)

If we really need to customise the emails, some custom work + usage of API is really the only way to get this done.