Show open streaks as bold in /dev/null
Proper closing of /dev/null streaks

/dev/null streaks forcibly close after the end of the tournament.
This doesn't work for (non /dev/null) player pages, though since
those use their separate processing (which should eventually be
removed and process_streaks() used instead).
Minor fix in player template
Make sql_load_streaks() little more versatile

The sql_load_streaks() function now allows for filtering by
name/name_orig and number of streak games.
Add Streaks section to /dev/null player pages