### 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)

{
    if (!clientModel || !clientModel->getPeerTableModel())
        return;
    const CNodeCombinedStats *stats = nullptr;
    bool fUnselect = false;
    bool fReselect = false;
    if (cachedNodeids.empty()) // n
        return;
    // f
    int selectedRow = -1;
    QModelIndexList selectedModelIndex = ui->peerWidget->selectionModel()->selectedIndexes();
    if (!selectedModelIndex.isEmpty()) {
        selectedRow = selectedModelIndex.first().row();
    }
    // c
    // b
    int detailNodeRow = clientModel->getPeerTableModel()->getRowByNodeId(cachedNodeids.first());
    if (detailNodeRow < 0)
    {
        // d
        fUnselect = true;
    }
    else
    {
        if (detailNodeRow != selectedRow)
        {
            // d
            fUnselect = true;