in dv case, compute weighting using count
Merge branch 'HERO-3652' of github.com:safarijv/ifpress-solr-plugin into
HERO-3652

Conflicts:
	src/main/java/com/ifactory/press/db/solr/spelling/suggest/MultiSuggester.java
using payloads in suggestion index to track counts, and updating only on
commit