DDF-906 - Changed CQL wildcard character from * to %

-% still works the same on solr and might fix other issues with other 3rd party providers.
-also % is better understood in the SQL work as the LIKE wildcard.
-adjusted contains operator to only use % characters for wildcards.  All *
will be converted to % characters.
Merge pull request #38 from McLucas/feature/cql-wildcard-fix

DDF-906 - Changed CQL wildcard character from * to %