Improve wikimetrics admin filters

kitsune/dashboards/admin.py

@@ -4,8 +4,14 @@ from kitsune.dashboards.models import WikiMetric
 
 
 class WikiMetricAdmin(admin.ModelAdmin):
-    list_display = ["code", "date", "locale", "product", "value"]
+    list_display = ["code", "date", "locale", "product", "value", "locale_code"]
     list_filter = ["code", "product", "locale"]
+    date_hierarchy = "date"
+
+    def locale_code(self, obj):
+        return obj.locale
+
+    locale_code.short_description = "Locale Code"
 
 
 admin.site.register(WikiMetric, WikiMetricAdmin)