Swarm: Issues follow-up

Done

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After sync, when loading a conversation auto download files if it's a little file
Copy number doesn't work
filetransfer: Now we can download files we sent (for example if we have two device, we should be able to download it from another device)
last interaction not there after import + sync

set message read on file transferts
notification d'invitation non enlevé pour l'acceptation de la request
Block contact doesn't work
A sends request to B, B accepts, B remove contact A, B adds A, restart B
discard conversation request. Relaunch app twice, the request come back
While conversation is syncing, we must show a syncing window and can'T send message/calls (because it will fallback as the swarm is not cloned)
can't scroll sometimes
How do we treat possible duplicates? (open question)
How do we treat infinite syncing? (open question)

Edited Jul 13, 2021 by Sébastien Blin