Show Sprout security warning

src/settings.h

@@ -31,6 +31,9 @@ public:
     bool    isSyncing();
     void    setSyncing(bool syncing);
 
+    int     getZcashdVersion();
+    void    setZcashdVersion(int version);
+    
     void    setUseEmbedded(bool r) { _useEmbedded = r; }
     bool    useEmbedded() { return _useEmbedded; }
 
@@ -105,6 +108,7 @@ private:
     bool    _isTestnet        = false;
     bool    _isSyncing        = false;
     int     _blockNumber      = 0;
+    int     _zcashdVersion    = 0;
     bool    _useEmbedded      = false;
     bool    _headless         = false;
     int     _peerConnections  = 0;