When adding allowed sources, it limits you to 128 characters. I need to add more allowed sources and that limit is keeping me from doing so. Feel like that limit is too constrictive and needs to be updated to allow more. Might be better and easier to read to convert those fields to a textarea so their not limited (https://api.drupal.org/api/drupal/developer!topics!forms_api_reference.h...).
Forgive me if I did anything wrong here, first patch I've ever committed and fairly new to Drupal.