Changes:
* The app now checks the web server for a json file referenced in pagedefinitions.json, for updates.
* I created a async thread that starts a new IntentServer (VersionCheckIntentService) if no check has been done within the last 24 hours.
* Currently, it initiates the install based on the URL of the new APK file at the specified URL.  We need to validate that this works.  We may need to download the APK file BEFORE trying to install it.