Clone chat should also copy disappearing messages expiration time

[ian]

Cloning an existing chat results in a new chat without disappearing messages set. Related:

Default timer for disappearing messages

Signal lets you set a default timer for disappearing messages. So whenever you start a new chat with someone, the default timer is automatically set for that chat. I think it would be great to include a similar feature in Delta Chat. For Delta Chat I think the feature should work like this. After you scan a contact’s QR code, as soon as the encryption is established, both accounts should automatically send the timer preference to each other, then compare the timer preferences of both accounts a…