Remove unused Paginator props

The Paginator's dispatch prop was first used to let this component handle the pagination all by itself by calling the relevant store action. However, this behavior was removed when use-url was active, since the paginator had to let the parent component use its beforeRouteUpdate method to paginate itself from the URL.

Now that every use of the Paginator relies on the URL and that not using the URL simply does not work, this PR removes both dispatch and use-url.