fix donation stuff
log round id
puzzle selector mongodb query strategy
puzzle2 mongodb migration script
Merge branch 'puzzle-picker'

* puzzle-picker:
  puzzle2 mongodb migration script
  puzzle selector mongodb query strategy
Merge branch 'master' into puzzle2

* master:
  puzzle2 mongodb migration script
  puzzle selector mongodb query strategy
  log round id
  fix donation stuff
misc fixes, upgrade chessground