Hi @high!
Since we could expect massive migration from googlecode to elsewhere I suggest to change server part of submission logic to replace url for specific plugin id instead of adding new line. Plugin part https://github.com/MediaPortal/MediaPortal-1/blob/master/mediaportal/MPE/php/submit.php looks ok for this potential change. It will free you from huge work or replacing urls manually.
Thanks!
Not working this way...theres no logic involved, anyone can add anything to that list by this script so manual approving is needed anyway. Just replacing is not a technical problem but it doesn't solve the general design issues.