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(!clientModel)
        return;
    if (!isHidden() && !isMinimized() && !GUIUtil::isObscured(this) && fToggleHidden) {
        hide();
    } else {
        GUIUtil::bringToFront(this);
    }
}
void BitcoinGUI::toggleHidden()
{
    showNormalIfMinimized(true);
}
void BitcoinGUI::detectShutdown()
{
    if (m_node.shutdownRequested())
    {
        if(rpcConsole)
            rpcConsole->hide();
        qApp->quit();
    }
}
void BitcoinGUI::showProgress(const QString &title, int nProgress)