Feature: provide best-effort paging links when total count is unknown

[bart-degreed]

Currently paging links are hidden when options.IncludeTotalRecordCount is set to False.
We can improve this by providing best-effort paging links in case the total number of resources is unknown:

• First: render if we have a page size (which means paging is active)
• Prev: render if we have a page size and current page number >1
• Next: render if we have a page size and the number of resources on current page == page size
• Last: render if we have a page size and the number of resources on current page < page size