bug with clearing history fixed, close to tray on esc

src/main.py

@@ -117,6 +117,8 @@ class Toxygen(object):
             if not self.ms.isActiveWindow():
                 self.ms.setWindowState(self.ms.windowState() & ~QtCore.Qt.WindowMinimized | QtCore.Qt.WindowActive)
                 self.ms.activateWindow()
+            if self.ms.isHidden():
+                self.ms.show()
 
         m.connect(show, QtCore.SIGNAL("triggered()"), show_window)
         m.connect(exit, QtCore.SIGNAL("triggered()"), lambda: app.exit())