minor cosmetic improvements to charts (#6919)

minor cosmetic improvements to charts (#6919)

diff --git a/app/assets/javascripts/admin/components/admin-report-chart.js.es6 b/app/assets/javascripts/admin/components/admin-report-chart.js.es6
index d103e6f..1c97f95 100644
--- a/app/assets/javascripts/admin/components/admin-report-chart.js.es6
+++ b/app/assets/javascripts/admin/components/admin-report-chart.js.es6
@@ -60,7 +60,11 @@ export default Ember.Component.extend({
           backgroundColor: prevChartData.length
             ? "transparent"
             : model.secondary_color,
-          borderColor: model.primary_color
+          borderColor: model.primary_color,
+          pointRadius: 3,
+          borderWidth: 1,
+          pointBackgroundColor: model.primary_color,
+          pointBorderColor: model.primary_color
         }
       ]
     };

GitHub sha: 71613048