added global script/ajax error handling.

NzbDrone.Web/_backboneApp/Shared/ErrorModel.js

@@ -0,0 +1,16 @@
+/// <reference path="../app.js" />
+
+NzbDrone.Shared.ErrorCollection = Backbone.Collection.extend({
+
+    model: NzbDrone.Shared.ErrorModel,
+
+});
+
+
+NzbDrone.Shared.ErrorModel = Backbone.Model.extend({
+
+    defaults: {
+        "title": "NO_TITLE",
+        "message": "NO_MESSAGE",
+    }
+});