Permission control for ticket history

Implement the management of permits for the history of the ticket.
At the first stage, it will simply be very useful to allow customers to see the entire journal.
For example, in our organization we do not make a secret from any ticket event.
In the target version, it’s possible to implement the decomposition of the events of the journal and share access to them.

Thanks for your wonderful product.

Duplicate of Access to ticket history to Customer