add mailinglists

app/UI/Client/DistributionList/Providers/AddListDataProvider.php

@@ -162,7 +162,7 @@ class AddListDataProvider extends BaseDataProvider
                 "kind" => "Moderator"
             );
         }
-        $paramsAddMembers[] = $moderator;
+        $paramsAddMembers = array($moderator);
 
         foreach($memberList as $member) {
             $intMembers[] = array(