Change bid requirement to bid suggestion

Makes many old files in archive valid again, as bid information can be
hard to find and is not essential to the scoring process

lib/sciolyff/validator/tournament.rb

@@ -60,7 +60,7 @@ def bids_for_regionals_or_states?(tournament, logger)
       if %w[Regionals States].include?(level)
         return true if tournament.key? :bids
 
-        logger.error "field 'bids:' required for level: #{level}"
+        logger.warn "field 'bids:' recommended for level: #{level}"
       else
         return true unless tournament.key? :bids