Smallest individual score should be 0.1 instead of SmallestNonZeroFloat

[ChrisSchinnerl]

Update the lowest positive score returned by any individual scoring check (e.g. price) to be 0.1. The exception are cases where we return a 0 score right now. That way, as long as a host is below the gouging settings for example, one host will only ever be 10x better than another one for a particular score. That should also avoid potential precision errors.