Check id in attributes before remove

src/code_manager/model/HtmlGenerator.js

@@ -24,6 +24,7 @@ export default Backbone.Model.extend({
           id &&
           id[0] === 'i' && // all autogenerated IDs start with 'i'
           !mod.get('script') && // if the component has script, we have to leave the ID
+          !mod.get('attributes').id && // id is not intentionally in attributes
           idRules.indexOf(id) < 0 // we shouldn't have any rule with this ID
         ) {
           delete attrs.id;