Fix trigger to insert lines where called when inserting line but also

when cloning parent object, making no way to know when to use them or
not. I introduced a context to allow code to know that and do not
triggers twice.

htdocs/commande/class/commande.class.php

@@ -878,6 +878,8 @@ class Commande extends CommonOrder
 
         $error=0;
 
+        $this->context['createfromclone'] = 'createfromclone';
+
         $this->db->begin();
 
 		// get extrafields so they will be clone
@@ -942,6 +944,8 @@ class Commande extends CommonOrder
             // End call triggers
         }
 
+        unset($this->context['createfromclone']);
+
         // End
         if (! $error)
         {