Fixes #2943 (suggestion)

[SilverYoCha]

Listen also to 'chatBoxInitialized' event in order to fetch newset messages.

Adding robustness when closing a chat box.

Removing console logs into control box template.

[jcbrand]

@SilverYoCha I recently removed the check !_converse.connection.restored because it would cause chats opened after refresh to be empty :grimacing:

I think in doing that I also fixed the issue you had, and so this MR is no longer needed. Thanks for your effort!

[SilverYoCha]

@jcbrand yes indeed, I tried without !_converse.connection.restored and it seems to work.