- Override the function __toString to comply with xdebug

- Correct bug in input_switch.class.php when there is several input_switch
- FicheDef the insertAttribut can have an order, usefull when installing new category + attribute

include/lib/http_input.class.php

@@ -45,6 +45,10 @@ class HttpInput
         $this->array=null;
         $this->empty="";
     }
+    public function __toString(): string
+    {
+        return "http_input".print_r($this,true);
+    }
     public function get_array()
     {
         return $this->array;