Basic/Start doesnt seem to match the codelab #237

According to the codelab what basic/start is supposed to load only the current days articles but what is actually happening is all 500 articles are being loaded at once without any pagination.

4. Project overview

As mentioned earlier, the current articleStream in the repository only presents news for the current day. While this might be enough for some users, others might want to view older articles when they've scrolled through all available articles for the current day.