add a --dry-run option, to be able to see the SQL that will be run
add the once-a month distributions game
add the distributions game to the site
use the word 'period' instead of 'category'
_commit_entries needs the game name too
Merge branch 'book/board/once-a/distributions'
add the game id to the query

or the data will be mixed up in the boards
add a description for the regular distributions game
use the game as the board title for the period summary
link to all contests
record the game for each board
put each game on a different row at the top-level summary
also compute the once-a week distributions boards
typo fix