title: iOS Background Fetch mode can be used to schedule some operation in the future that doesn't actually fetch remote data?
body: <p>I'm doing an app that requires to reschedule local notification on daily basis. I'm aware about the <code>repeatInterval</code> property, but repetitioon here is like each 2 days etc. <br>
  I've seen silent notifications, but they can be used only with push notifications and due to some requirements I can't use that approach. <br>
  Now the app works on the hypothesis that the user will open the app quite enough to reschedule those notifications. This hypothesis is fine and we all agree that will work, but I will be more confident, if it would be possible to reschedule them on daily basis without opening the app.<bR>
  I've seen the new API Background Fetch, this could be really good for me, but from doc and WWDC videos I didn't understand if it is possible to use for "everything" or just to fetch remote data.</p>