fuel/core — pull request #1365 by huglester (2013-03-05 23:48:56+00:00)
Title: Added $_mass_whitelist/blacklist to Model_Crud

For example I have Model_Customer to work with and it's ok.

Now I need Model_Customer_Api which would extend the Model_CUstomer, but I want only fields like:

```php
protected static $_mass_whitelist = array(
'first_name',
'last_name',
);
```
to be changed from Api model, but not others. so I pass only those fields.

Also made the mass_blacklist, so we can blacklist for example 'username' field, where api won't be able to change the username.

Thanks,
huglester