alter statistics count_learning_objects to show only published lo's

app/controllers/v1/statistics_controller.rb

@@ -7,7 +7,7 @@ class V1::StatisticsController < ApplicationController
 
   private
     def count_learning_objects
-      LearningObject.all.count
+      LearningObject.where('state = ?', LearningObject.states[:published]).count
     end
 
     def month_publications