* SimpleStatistics can compute variance (online algorithm)
* Added confidence intervals and other statistical variables to the report
* Sum up in report (AVG row) is now computed using statistics merging, not as average of the other rows
New HTML report aggregating all the charts and data from CSV files
* More ways of retrieving data from SimpleStatistics
* Fixed bugs in HistogramStatistics, Table...
* Removed unused code (ChartGen, AbstractChartGen, PutGetChartGenerator...)
* chart.sh -> report.sh: generates whole report, not just single chart
HTML report improvements
* expandable per-node statistics, different results detection (red background)
* parsing of the CSV files is more robust