Bug with unread chat messages on Trades/Orders

Hello,

Sadly last week a bug was introduced (part of a large backend framework / libraries upgrade) that caused the "unread" status of chat messages on trades and orders to not be properly set, so notifications of unread messages were not delivered, and the icon in the left menu with the "unread messages" was not rendered.

I have fixed the bug now but some data regarding the "unread" flag was lost (i.e. never saved), so the only way to get users the missing notifications was to mark all the chat messages since last Thursday as "unread".

Notifications will now be correct for those of you have not manually looked through their trades / orders, but if you did read some new messages, they will now again be shown to you as "unread" until you open the trade/order again.

Sorry for the mishap.