### 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)

{
    QString connections = QString::number(clientModel->getNumConnections()) + " (";
    connections += tr("In:") + " " + QString::number(clientModel->getNumConnections(CONNECTIONS_IN)) + " / ";
    connections += tr("Out:") + " " + QString::number(clientModel->getNumConnections(CONNECTIONS_OUT)) + ")";
    if(!clientModel->node().getNetworkActive()) {
        connections += " (" + tr("Network activity disabled") + ")";
    }
    ui->numberOfConnections->setText(connections);
}
void RPCConsole::setNumConnections(int count)
{
    if (!clientModel)
        return;
    updateNetworkState();
}
void RPCConsole::setNetworkActive(bool networkActive)
{
    updateNetworkState();
}
void RPCConsole::setNumBlocks(int count, const QDateTime& blockDate, double nVerificationProgress, bool headers)
{
    if (!headers) {
        ui->numberOfBlocks->setText(QString::number(count));
        ui->lastBlockTime->setText(blockDate.toString());
    }
}
void RPCConsole::setMempoolSize(long numberOfTxs, size_t dynUsage)