title: nagios enable_notifications not working
body: <p>I am trying to disable all notifications on my nagios core server. Initially I changed nagios.conf with enable_notifications=0. It worked and when I go to GUI, I was able to see red notification saying "notifications are disabled". Then I reverted changes. It worked perfectly and red message from UI was disappeared. </p>
  
  <p>After that, from GUI, I went to System->Process Info->Disable Notification. Command seemed success but I was unable to see red message on GUI so I went again System->Process Info->Enable Notification. After that I am unable to disable notifications. Even if I change nagios.conf and restart service, It doesn't make any difference. Neither it display red message on GUI nor notifications stops. Can you please help me understand </p>
  
  <ol>
  <li>Why this behavior?</li>
  <li>How to reset effect of any GUI command (like enable/disable from GUI) if executed</li>
  </ol>
  
  <p>Thanks.</p>