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">

QStackedWidget(parent),
    clientModel(nullptr),
    walletModel(nullptr),
    platformStyle(_platformStyle)
{
    
    overviewPage = new OverviewPage(platformStyle);
    transactionsPage = new QWidget(this);
    QVBoxLayout *vbox = new QVBoxLayout();
    QHBoxLayout *hbox_buttons = new QHBoxLayout();
    transactionView = new TransactionView(platformStyle, this);
    vbox->addWidget(transactionView);