These tables have never been actively maintained and the code is
completely untested. With the upcomming changes, it is unlikely
that the code remains usable.
This removes the aux tables and all code that references them.
Disabling query reversal is no longer possible in the configuration,
so there is no need to keep this as an option. Reversal is
automatically disabled for structured search only.
When we are in the final iteration of the search groups, it is not
possible to further delay the results. Unconditionally use the
results with the best rank instead.
Results where the housenumber was dropped are an unlikely result
when they refer to something other than a street. Therefore
increase their result rank so that other matches are tried first
before choosing them as a result.
Improves #2167.
