Display a column of "edit"

[Rub21]

@ajithranka is there a way to display a column if edit in the stats https://build-to-fix-production.mapbox.com/tasks/brokenpolygons/track_stats/from:2016-07-06/to:2017-07-06 , the API bring the num of edit` as well.

      "Rub21": {
        "edit": 11,
        "skip": 0,
        "fixed": 0,
        "noterror": 10,
        "josm": 21
      },

[ajithranka]

Fixed. Thanks @Rub21!