Synchronize unread marker when client reconnects
Synchronize unread marker when client reconnects

Fixes #1571

MaxLeiter/lounge,realies/lounge,FryDay/lounge,ScoutLink/lounge,FryDay/lounge,FryDay/lounge,ScoutLink/lounge,MaxLeiter/lounge,realies/lounge,williamboman/lounge,ScoutLink/lounge,realies/lounge,thelounge/lounge,thelounge/lounge,williamboman/lounge,MaxLeiter/lounge,williamboman/lounge