Enable system tray in MACOSX (Nick Korotysh).

src/preferences/options_imp.cpp

@@ -102,14 +102,10 @@ options_imp::options_imp(QWidget *parent):
   // Load options
   loadOptions();
   // Disable systray integration if it is not supported by the system
-#ifndef Q_WS_MAC
   if (!QSystemTrayIcon::isSystemTrayAvailable()) {
-#endif
     checkShowSystray->setChecked(false);
     checkShowSystray->setEnabled(false);
-#ifndef Q_WS_MAC
   }
-#endif
 #if !defined(Q_WS_X11)
   label_trayIconStyle->setVisible(false);
   comboTrayIcon->setVisible(false);

src/preferences/preferences.h

@@ -135,11 +135,7 @@ public:
   }
 
   bool systrayIntegration() const {
-#ifdef Q_WS_MAC
-    return false;
-#else
     return value(QString::fromUtf8("Preferences/General/SystrayEnabled"), true).toBool();
-#endif
   }
 
   void setSystrayIntegration(bool enabled) {