Ajout du validateur json + correctif factory metadata

lib/All/json-schema-validator/test/issue-9/base.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "description": "Describes foo",
+  "type": "object",
+  "allOf": [
+    { "$ref": "bar.json" },
+    { "$ref": "foo/foo.json" }
+  ]
+}