When creating a new account / recovery we don't poll the mailserver anymore for historic messages, which solves the immediate issue of fetching only received messages
Handle messages sent from a different device in public chat / restore history. The message will be added, shown correctly as sent by the user, and the status will be set as sent ( need to check for seen race condition, as messages will now be added twice). This means that multidevice should now work for public chats.
Move contact updates to discovery topic. This is necessary as there is a pre-existing bug whereby contact updates would not work anymore after wallet recovery, as the code relies on the initial contact request being stored on the mailserver, which we cannot guarantee (we only pull 7 days of data). Not pulling history anymore exacerbate the problems but does not introduce it.
To make sure that contact updates will work after wallet recovery, we also need to consider a ContactUpdate in the same way we consider a ContactRequest (the other peer has no idea that the user has recovered the wallet). This does not change any behaviour in terms of obscurity/security as ContactRequest are automatically processed (in both case the contact will be set as pending?, not as accepted)
At this stage ContactRequest, ContactRequestConfirmed, ContactUpdate have all the same logic, i.e. update the contact information, leave the pending flag alone.
Only 1 day of history is fetched for newly joined chats, if catching up 7 days is the cap as before.
Signed-off-by: Andrea Maria Piana <andrea.maria.piana@gmail.com>
b34744133b