Improve the way we init the view. The data loader send a "loaded" event, hooked by the scene.py and initializing the backbone.history and the view. We don't use redraw_active in save-once and full-json, because it was making the view initialization dependent of these file which are externals. Small fix to hide the "set saved view" button when there is only one view.

define([], function ($, _) {
    'use strict';
    return {
        getUtils: function(){
            return window.Rkns.Utils;
        },
        getRenderer: function(){
            return window.Rkns.Renderer;
        }
    };

});