Manage bulk insert

[ddurieux]

we must add possibility to bulk insert (POST list of resource).

Example, post this on service resource:

[{"name": "tmp10", "register": false},{"name": "tmp11", "register": false}]

and result:

{
    "_status": "OK",
    "_items": [
        {
            "_updated": "Tue, 20 Oct 2015 13:30:04 GMT",
            "_links": {
                "self": {
                    "href": "service/562641dc8bde9cc16bc42a07",
                    "title": "Service"
                }
            },
            "_created": "Tue, 20 Oct 2015 13:30:04 GMT",
            "_status": "OK",
            "_id": "562641dc8bde9cc16bc42a07",
            "_etag": "b1339794c85270434cf8a78e093dd0cdcc7a73b3"
        },
        {
            "_updated": "Tue, 20 Oct 2015 13:30:04 GMT",
            "_links": {
                "self": {
                    "href": "service/562641dc8bde9cc16bc42a08",
                    "title": "Service"
                }
            },
            "_created": "Tue, 20 Oct 2015 13:30:04 GMT",
            "_status": "OK",
            "_id": "562641dc8bde9cc16bc42a08",
            "_etag": "02d99b5d802b559d5897423038cb4da0b74ad7cf"
        }
    ]
}