enabled setting default checkbox state (#137)
enabled setting default checkbox state (#137)

Usability fix for https://github.com/Laravel-Backpack/CRUD/issues/135
Laravel-Backpack/crud,Laravel-Backpack/crud,Laravel-Backpack/crud,imagina/asgardcms-bcrud,fede91it/crud,fede91it/crud,fede91it/crud,Laravel-Backpack/crud,fede91it/crud,imagina/asgardcms-bcrud