[backend] Rapport : correctif bug liste années

backend/controllers/ReportController.php

         
         // distributions
         $firstDistribution = Distribution::searchOne([], [
-            'orderby' => 'id ASC'
+            'orderby' => 'date ASC'
         ]) ;
         $lastDistribution = Distribution::searchOne([], [
-            'orderby' => 'id DESC'
+            'orderby' => 'date DESC'
         ]) ;
         
         $firstYear = date('Y',strtotime($firstDistribution->date)) ;