revert to using full names for street name matching

revert to using full names for street name matching

Using partial names turned out to not work well because there are
often similarly named streets next to each other. It also
prevents us from being able to take into account all addr:street:*
tags.

This change gets all the full term tokens for the addr:street tags
from the DB. As they are used for matching only, we can assume that
the term must already be there or there will be no match. This
avoid creating unused full name tags.