fix #432 load more activities

Loading to few activities can cause claims not being displayed as claims
and bounties are loaded via separate XHR requests. This change
implements a quick fix around that making old activities show up.

Long term we should move claims into the response of `/api/open-bounties`
so that they always are available for bounties shown in the UI.

This is also somewhat related to better API pagination as described in
#250

resources/sql/queries.sql

@@ -634,7 +634,7 @@ SELECT
   updated
 FROM activity_feed_view
 ORDER BY updated DESC
-LIMIT 100;
+LIMIT 1000;
 
 -- :name get-new-users-for-welcome-email :? :*
 -- :doc users who have not been sent a welcome email