Notifications from the clubs#79

Add a choice to turn off and turn on only selected notifications.
(ex. Get notifications from friends/people I am following but not get notifications from other people from clubs, unless it’s on my post etc.)

Combine all club notification into one “digest notification” i.e. “Vincent added 8 books to the club” instead of singular notifications per book.

We don’t have a feature yet to select which notifications to receive, but you can choose which club to receive notifications from now.