Information in the progress window (example: rescan) is displayed capped to fixed size instead of contents.

<img width="209" alt="screenshot 2018-12-21 at 14 58 20" src="https://user-images.githubusercontent.com/26601261/50345943-0bbd4300-0531-11e9-9c6c-e277ac69eb0c.png">

{
    
    if (!walletModel || !clientModel || clientModel->node().isInitialBlockDownload())
        return;
    TransactionTableModel *ttm = walletModel->getTransactionTableModel();
    if (!ttm || ttm->processingQueuedTransactions())
        return;
    QString date = ttm->index(start, TransactionTableModel::Date, parent).data().toString();
    qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent).data(Qt::EditRole).toULongLong();
    QString type = ttm->index(start, TransactionTableModel::Type, parent).data().toString();
    QModelIndex index = ttm->index(start, 0, parent);
    QString address = ttm->data(index, TransactionTableModel::AddressRole).toString();
    QString label = ttm->data(index, TransactionTableModel::LabelRole).toString();
    Q_EMIT incomingTransaction(date, walletModel->getOptionsModel()->getDisplayUnit(), amount, type, address, label, walletModel->getWalletName());
}
void WalletView::gotoOverviewPage()