Remove database app_name and app_uuid (#7562)

- Remove database app_name, app_uuid
  - This is handled automatically by the database class
- Remove redundant database::new()

core/authentication/app_defaults.php

@@ -99,8 +99,6 @@
 			$p->add("email_template_edit", 'temp');
 
 			//save the data
-			$database->app_name = 'email_templates';
-			$database->app_uuid = '8173e738-2523-46d5-8943-13883befd2fd';
 			$database->save($array);
 			//$message = $database->message;