Updates available for WatchDog2 .

Changes :
      1. System tray icon visibility is fixed.
      2. On pressing the Close button of the application will not close the application . Window will minimize to tray .To open the window again , right click on the system tray icon , select 'show' .
      3. On changing interactivity , now on wards , all the monitoring will be stopped . ( Many complained that , on changing monitoring config-json is                 changed. )