Add a middleware for handling cross domain requests with type "rest"

[Julien Ricard]

OPTIONS requests for "rest" routes are getting routed in the controllers (Router is looking for an "optionsAction" method obviously) so we need a (built-in) middleware for handling OPTIONS requests, using the config.ini for cross-domain configuration.

[Julien Ricard]

done
e8c104a

[Julien Ricard]

http://stackoverflow.com/questions/38999235/angular2-rest-request-http-status-code-401-changes-to-0

[Julien Ricard]

Every response must include the CORS headers

[Julien Ricard]

fixed