Refactor Follows/Followers counter syncronization

- Actually sync counters in the database instead of info cache (which got
overriden after user update was finished anyway)
- Add following count field to user info
- Set hide_followers/hide_follows for remote users based on http status
codes for the first collection page

config/test.exs

@@ -29,7 +29,8 @@ config :pleroma, :instance,
   email: "admin@example.com",
   notify_email: "noreply@example.com",
   skip_thread_containment: false,
-  federating: false
+  federating: false,
+  external_user_synchronization: false
 
 # Configure your database
 config :pleroma, Pleroma.Repo,