paging and sorting in the repository overview

[Thomas Moschny]

Hi,

we are displaying a whole bunch (>50) of repositories via cgit, and
there's a small issue with the overview page: it seems paging is done
before sorting. Or, more precisely, repositories are first sorted
alphabetically, then paging is done, and finally the requested sort
order (for example according to their idle time via ?s=idle) is applied
to the page. I'd instead expect sorting to be done before paging.

- Thomas