Merge remote-tracking branch 'origin/pr/169'

* origin/pr/169:
  Fixed device list behavior for a running VM in VM settings

qubesmanager/settings.py

@@ -959,6 +959,8 @@ class VMSettingsWindow(ui_settingsdlg.Ui_SettingsDialog, QtGui.QDialog):
 
         self.update_pvh_dont_support_devs()
 
+        self.dev_list.setEnabled(not self.vm.is_running())
+
     def __apply_devices_tab__(self):
         msg = []