CORS does not work on validation error

[leplatrem]

After a quick look at the code, it could be related to the bare response object built by the error_handler, thus bypassing CORS mechanism :
https://github.com/mozilla-services/cornice/blob/master/cornice/service.py#L470
https://github.com/mozilla-services/cornice/blob/master/cornice/util.py#L45

(Spotted on Daybed spiral-project/daybed#48)

[tdavis]

Yeah, I've started noticing this too. It makes debugging a huge pain.

[almet]

This was fixed in 26606e4 and 21fde22

I didn't took the time to update here, but that should be okay by now.