- Added counts of distinct download/view originating countries. ...

- Fixed broken upper bound for year in sql->getAbstractDownload().
- Added grand totals of downloads/views to cumulative country tables.
- Added subtle vertical borders to stats tables.
- Fixed some minor HTML bugs and fixed formatting of "no stats available"
  messages.

- Switched to different country codes for different classes of local traffic, ...

and to fix the problem of download numbers being assigned to the wrong class.

- Added subtle highlighting of alternate rows in stats tables.

- Changed "no downloads" message slightly.

- Added support for listing papers downloaded by country.