### Describe the issue
Warning messages are not displayed when running bitcoin-qt 0.14.2 and 0.14.99 with -disablewallet.
It might be better to always display them.

E.g. on MainNet the "This is a pre-release test build - use at your own risk - do not use for mining or merchant applications" is lost
![image](https://user-images.githubusercontent.com/3296421/29109760-853e5394-7ce4-11e7-8f05-bfcd66ada471.png)
![image](https://user-images.githubusercontent.com/3296421/29109806-adf6e67a-7ce4-11e7-8564-8883c44656ad.png)

On TestNet also the "Warning: unknown new rules activated (versionbit 28)" is missed
![image](https://user-images.githubusercontent.com/3296421/29110269-6b24b79e-7ce6-11e7-91e7-823227eaa200.png)
![image](https://user-images.githubusercontent.com/3296421/29110035-9142cf34-7ce5-11e7-8faf-264e805cdaf4.png)

{
    ui->trafficGraph->setGraphRangeMins(mins);
    ui->lblGraphRange->setText(GUIUtil::formatDurationStr(mins * 60));
}
void RPCConsole::updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut)
{
    ui->lblBytesIn->setText(GUIUtil::formatBytes(totalBytesIn));
    ui->lblBytesOut->setText(GUIUtil::formatBytes(totalBytesOut));
}
void RPCConsole::peerSelected(const QItemSelection &selected, const QItemSelection &deselected)
{
    Q_UNUSED(deselected);
    if (!clientModel || !clientModel->getPeerTableModel() || selected.indexes().isEmpty())
        return;
    const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats(selected.indexes().first().row());
    if (stats)
        updateNodeDetail(stats);
}
void RPCConsole::peerLayoutAboutToChange()
{
    QModelIndexList selected = ui->peerWidget->selectionModel()->selectedIndexes();
    cachedNodeids.clear();
    for(int i = 0; i < selected.size(); i++)
    {
        const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats(selected.at(i).row());
        cachedNodeids.append(stats->nodeStats.nodeid);
    }
}
void RPCConsole::peerLayoutChanged()