Data aggregations refactored using summary in place of facet
Merge pull request #194 from obiba/aggregation-statistics-summary

Data aggregations refactored using summary in place of facet
fixed-string-query - added 'und' in the localized mapping
Merge pull request #195 from kazoompa/fixed-string-query

fixed-string-query - added 'und' in the localized mapping
More summary statistics
Merge pull request #196 from obiba/more-statistics-summary

More summary statistics
Adding support for opal server per study.
added opal credentials support