Modify inconsistent scaling for queries.

[mpanaggio]

New queries can have inconsistent scaling (they are not on the same absolute scale) when max_query and max_anchor are both above the threshold:

GoogleTrendsAnchorBank/gtab/core.py

Line 1008 in db69456

if max_query >= thresh and max_anchor >= thresh:

I believe this line should read: if max_query >= thresh and max_anchor >=max_query.