RFC: Filter out unauthorized lists
Use is_mlist_authorized() to work out if lists should be shown on the HyperKitty index view. I think this fixes mailman-suite#10 (closed) in HyperKitty, or at least attempts to. So private mailing lists where users/members are subscribed to should be shown.
I have no experience with django apps so there might be a better way but thought I'd give it a go.
Edited by Haw Loeung