Support for protection against JSON Vulnerability

[bjartek]

Vulnerability: http://haacked.com/archive/2008/11/20/anatomy-of-a-subtle-json-vulnerability.aspx

Reference: http://code.angularjs.org/1.1.4/docs/api/ng.$http#put

Trait that adds a implicit Writeable that contains the mentioned character sequence: http://stackoverflow.com/questions/14614458/how-to-prefix-all-json-responces-in-play2-to-prevent-jsonp-escalation-via-valnur

It is not possible to include the given trait in the stackoverflow link since the controller is a abstract class and not a trait. If the Autosource controllers were traits they could be mixed in in any order possible.

Another possiblity is to include the given implicit in the controllers themselves? //Not sure how other parsers handle them though.