Adding test to ensure that fillable always overrides guarded.

Signed-off-by: Ben Corlett <bencorlett@me.com>
Merge pull request #1566 from bencorlett/feature/whitelist-unit-tests

Adding test to ensure that fillable always overrides guarded.
added status bades.
Merge branch '4.0' of github.com:laravel/framework into 4.0
Merge branch '4.0'