Fix window visibility toggling bug with "minimized to systray" enabled

The issue seemed to affect Windows only.

src/mainwindow.cpp

@@ -702,9 +702,10 @@ void MainWindow::toggleVisibility(QSystemTrayIcon::ActivationReason e) {
         if (!unlockUI())
           return;
       }
+      // Make sure the window is not minimized
+      setWindowState(windowState() & ~Qt::WindowMinimized | Qt::WindowActive);
+      // Then show it
       show();
-      raise();
-      activateWindow();
     }else{
       hide();
     }