[#153,#212,view/map][m]: fixes #153 bug re map rendering (see issue for more) and in process did refactoring of map view in line with #212.

* multiview: refactored to call render on all views as that is new setup for #212 (and also needed for #153)
* tutorial-views: call render now which fixes bug (this was specific issue reported in #153)

docs/tutorial-views.markdown

@@ -224,6 +224,6 @@ var map = new recline.View.Map({
   model: dataset
 });
 $el.append(map.el);
-map.redraw();
+map.render();
 </script>