Issue Summary

Options to increase the number of document displayed by the "Space attachments" macro per page

Steps to Reproduce

1. Insert a Space Attachment Macro on a page for a space which contains more than 20 attachments.
2. On the page we can can only see 20 attachments per page and other attachments are lined up in pagination.

Expected Results

With a space containing large number of attachments for a given filter, it would make sense to provide a hook for the customer where they can change the page size as per their convenience.