add pagination service and use it for yml file authorities

[elrayle]

This implementation follows json-api recommendations with:

• response[‘data’] = the results
• response[‘meta’][‘page’] = pagination statistics (i.e., page_offset, page_limit, actual_page_size, total_num_found)
• response[‘links’] = set of links for pagination (i.e., self, first, prev, next, last)
• response[‘errors’] = any errors with requested page_offset or page_limit (only included if there are errors)

Reference:

• Pagination section of Latest JsonAPI spec
• Pagination Links example

NOTE: For backward compatibility, if the format is JSON (default) and neither page_offset or page_limit are set, then only the results, including all results, will be returned.