### 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)

{
    const QString name = walletModel->getWalletName();
    // 
    QString display_name = name.isEmpty() ? "["+tr("default wallet")+"]" : name;
    ui->WalletSelector->addItem(display_name, name);
    if (ui->WalletSelector->count() == 2 && !isVisible()) {
        // 
        ui->WalletSelector->setCurrentIndex(1);
    }
    if (ui->WalletSelector->count() > 2) {
        ui->WalletSelector->setVisible(true);
        ui->WalletSelectorLabel->setVisible(true);
    }
}
void RPCConsole::removeWallet(WalletModel * const walletModel)