Sponsor dashboard estimated next payout display

sponsor dashboard estimated next payout shows total accumulated instead of since last payout (we are using opencollecitve for the payouts if that matters)

So for us e.g. it currently shows 91 USD (total), while it should show 10 USD instead (since last payout).

Luckily the payouts themselves are correct though, so we are not getting too much money :smiley: