[#25,view,refactor][s]: get views working with new field setup (fixes #25).

* One nastiness along the way (30m delay!) that is worth noting: flot graph was a problem because it turned out that a) (re-)render triggered by dataset attributes change and fields only got set *after* core dataset attributes and so info was rendering.
* model.test.js: basic test for Dataset.toTemplateJSON

src/model.js

@@ -61,6 +61,7 @@ my.Dataset = Backbone.Model.extend({
   toTemplateJSON: function() {
     var data = this.toJSON();
     data.docCount = this.docCount;
+    data.fields = this.fields.toJSON();
     return data;
   }
 });