Fix tooltip on overview chart

 - Legacy-Id: 13269

Author: OleLaursen

ietf/stats/views.py

@@ -878,7 +878,7 @@ def get_country_mapping(registrations):
             series_data.sort(key=lambda t: t[0])
             table_data.sort(key=lambda t: t[0], reverse=True)
 
-            chart_data.append({ "data": series_data })
+            chart_data.append({ "name": "Registrations", "data": series_data })
 
 
         elif stats_type == "country":
@@ -924,7 +924,6 @@ def get_country_mapping(registrations):
 
     return render(request, "stats/meeting_stats.html", {
         "chart_data": mark_safe(json.dumps(chart_data)),
-        "use_legend": chart_data and chart_data[0].get("name"),
         "piechart_data": mark_safe(json.dumps(piechart_data)),
         "table_data": table_data,
         "stats_title": stats_title,

ietf/templates/stats/meeting_stats_overview.html

@@ -15,7 +15,7 @@ <h3>{{ stats_title }}</h3>
              animation: false
          }
      },
-     {% if use_legend %}
+     {% if stats_type != "overview" %}
      legend: {
          align: "right",
          verticalAlign: "middle",
@@ -40,7 +40,7 @@ <h3>{{ stats_title }}</h3>
      },
      tooltip: {
          formatter: function () {
-             var s = '<b>' + this.x + '</b>';
+             var s = '<b>' + "IETF " + this.x + '</b>';
 
              $.each(this.points, function () {
                  s += '<br/>' + this.series.name + ': ' + this.y;