Update peers list after switching accounts

[TechnicJelle]

Thanks a bunch for making this program!

When I switch accounts, the peer list does not update to reflect the other devices from that account.
I've verified that it's because of my high polling interval, which is set to 60 seconds, because I really don't need it to update very often. I never look there anyway, so it's fine if it's a bit slow.

However, it would be nice if it would force one extra poll, just after you switch accounts, to make it update quickly the one time I do want it to.