### 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)

void setFontSize(int newSize);
    
    void message(int category, const QString &msg) { message(category, msg, false); }
    void message(int category, const QString &message, bool html);
    
    void setNumConnections(int count);
    
    void setNetworkActive(bool networkActive);
    
    void setNumBlocks(int count, const QDateTime& blockDate, double nVerificationProgress, bool headers);
    
    void setMempoolSize(long numberOfTxs, size_t dynUsage);
    
    void browseHistory(int offset);
    
    void scrollToEnd();
    
    void peerSelected(const QItemSelection &selected, const QItemSelection &deselected);
    
    void peerLayoutAboutToChange();
    
    void peerLayoutChanged();
    
    void disconnectSelectedNode();
    
    void banSelectedNode(int bantime);
    
    void unbanSelectedNode();
    
    void setTabFocus(enum TabTypes tabType);