Change the default setting of meta course to No when backing up a course

i don't know about others but I would guess that most people probably would prefer the default setting to be No (see attached screenshot). Currently it is set to Yes. It's easy to change it, just need to change this line from 1 to 0 (at around line 62 in /backup/backup_form.html

[original]
$backup_metacourse = optional_param('backup_metacourse',1);

[change to]
$backup_metacourse = optional_param('backup_metacourse',0);