Update the unread badge on the app icon itself (on the home screen) to reflect a count of unread notifications.
Product/Design Needs:
[1] Are we going to badge the app icon (on the home screen) with the count of unread notifications at all?
[2] If so, is this a count of all unread notifications or just the ones the user has opted to be push notified about?
Engineering Needs:
[1] Depending on our in-app polling/bell badging design requirements, we need to determine the best point(s) at which to refresh the notification center content/this count
Dependencies
https://phabricator.wikimedia.org/T287298