LP#1549505: fix badge scoping

LP#1549505: fix badge scoping

This patch fixes badge scoping during searches
so that only badges at the search location and its
ancestors are used to calculate popularity. Note that
if a user explicitly puts in a badge_orgs search "filter"
in the query, that will override this default behavior,
allowing you to do things like search the entire consortium,
but bring hits that are most popular per a badge
scoped at branch X to the top.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>