round up maxDataPoints to nearest integer in request. graphite 0.9.x and 0.9.12 seem to treat decimal maxDataPoints badly returning enourmous amounts of data
Merge pull request #183 from merc1031/master

round up maxDataPoints to nearest integer in request. graphite 0.9.x and...
added graphite functions: percentileOfSeries, sumSeriesWithWildcards, averageSeriesWithWildcards