added adv, median, and error bar controls
adjusted widths, changed application to app, and converted mean/median/std to ints
adjusted widths, changed application to app, and converted mean/median/std to ints
Merge pull request #110 from mozilla/b2g-median

mean, median, and error bar controls
insure that x is defined, when it's empty in legacy data set it to 0
changed int to float