Fix customer::id_default_group

src/sync/sync.inc.php

@@ -65,7 +65,7 @@ const PD_DELETE_LINK = false;
 // Général
 const P_ID_LANG = 1; // Depeacated use global const P_LANG_ID
 const P_ID_SHOP = 1; // Depeacated use global const P_SHOP_ID
-const P_ID_SHOP_GROUP = 1;
+const P_ID_SHOP_GROUP = 3; // Client by default
 const P_ID_TAX_RULES_GROUP = 3;
 // Product
 const P_ID_CATEGORY_DEFAULT = 2; // Depeacated use global const P_CATEGORY_DEFAULT_ID