Add AvgROI%, as counted by SharkScope

[pt4pt4pt4]

when I was messing around with custom stats and graphs, I filtered the results to only display one and then only two Tourneys to graph. I wanted to check that PT4 graph was displaying the correct data for at least the 2 tourneys or data points ( or for sq root maybe 4 & 9 ?).

Like you said and whiterider mentioned, the graph options is still a work in progress.