Reformatted normalizer

Belief score normalizer code for relative belief scoring is now after
the number of choices has been determined, so drastic normalization is
now easier to implement in the future (ie. the highest scored item that
cannot be chosen is used for normalization instead of the lowest scored
item).
ChooseProduction() Normalizer

ChooseProduction will now subtract the weight of the lowest scored
buildable item from all buildable item scores, effectively normalizing
their weights.