title: All notifications disappearing after opening one of them
body: <p>I have a server that sends me push notifications and let's say that I have 5 notifications on my phone. If I open one of them all other notifications disappears. I want only the one clicked to disappear.</p>
  
  <p>This is how I handle receiving notifications:</p>
  
  <pre><code>func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -&gt; Void) {
  
      if ( application.applicationState == UIApplicationState.Inactive || application.applicationState == UIApplicationState.Background  )
      {
          // navigating user to a view controller
      }
      application.applicationIconBadgeNumber = 0
  }
  </code></pre>