Fix proximity adjustment calculator

Fix proximity adjustment calculator

The canonical use case for proximity adjustment is to use it broadly
to effect the local proximity of items within a particular area, in
a like manner, across many parts of the org tree.  However, in cases
where it is lightly used, or used with non-overlapping criteria columns,
there are cases where the adjustment will spread beyond its intended
range of influence.

The changes here create a much stricter and correct test for rule
matching, which will end in the correct choice of rules in all cases.

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>
Signed-off-by: Mike Rylander <mrylander@gmail.com>