Ignore IntelliJ IDEA project files
* Fixing charts when rows using multiple levels of the same hierarchy
* Labels from all levels are now joined, e.g. 'Feb/Q1/2012' instead of 'Feb'
No longer appending '[N]' counter unless labels have duplicates
No longer appending '[N]' counter unless labels have duplicates - dead code removed
Edge condition if no label is available
Introduce cellset local variable to avoid duplication
Fixing stacked bar chart by implicitly changing empty strings to 0
Without it empty strings caused maximum value in stacked bar chart to be incorrectly computed (NaN?) and nothing was displayed
More distinct, pleasantly looking colors based on jqPlot project
Merge pull request #166 from nurkiewicz/chart-fixes

Multiple chart fixes