In my system, decimal separator is comma. In transaction list in a GUI for all mounts decimal separator is point. But in amount filter field I can't enter point, only comma (which is decimal separator in my system), and, most likely because of that, filtering by amount does not work.

It's bitcoin-qt v0.16.0 with qt 5.9.4 on Gentoo Linux.

![image](https://user-images.githubusercontent.com/4500994/43676682-635500c6-97fe-11e8-9f14-490ecdce4adc.png)

{
    if(!transactionProxyModel)
        return;
    transactionProxyModel->setDateRange(
            QDateTime(dateFrom->date()),
            QDateTime(dateTo->date()).addDays(1));
}
void TransactionView::focusTransaction(const QModelIndex &idx)
{
    if(!transactionProxyModel)
        return;
    QModelIndex targetIdx = transactionProxyModel->mapFromSource(idx);
    transactionView->scrollTo(targetIdx);
    transactionView->setCurrentIndex(targetIdx);
    transactionView->setFocus();
}
void TransactionView::focusTransaction(const uint256& txid)