### 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(ch != '"' && ch != '\\') curarg += '\\'; 
                curarg += ch; state = STATE_DOUBLEQUOTED;
                break;
        }
    }
    if (pstrFilteredOut) {
        if (STATE_COMMAND_EXECUTED == state) {
            assert(!stack.empty());
            close_out_params();
        }
        *pstrFilteredOut = strCommand;
        for (auto i = filter_ranges.rbegin(); i != filter_ranges.rend(); ++i) {
            pstrFilteredOut->replace(i->first, i->second - i->first, "(…)");
        }
    }
    switch(state) // 
    {
        case STATE_COMMAND_EXECUTED:
            if (lastResult.isStr())
                strResult = lastResult.get_str();
            else
                strResult = lastResult.write(2);
        case STATE_ARGUMENT:
        case STATE_EATING_SPACES:
            return true;
        default: // 
            return false;
    }
}
void RPCExecutor::request(const QString &command, const QString &walletID)