Returns the data which have been validated

Lets continue the process with only validated datas

Move commit on 4.2 branche : https://github.com/laravel/framework/pull/4833
Rename method in passed
add Passes method to run validation
Merge branch 'patch-2' of https://github.com/bastiendonjon/framework into bastiendonjon-patch-2
Cleaning up a few method names.
Merging.