Fix favorites initialization against 4.0.2 again.

        // Add links for favoriting classes

        //

        // We should be able to just listen the "render" event of tee,

        // but for some reason the tree nodes aren't quite ready when

        // "render" fires (setting text on node will cause an

        // exception because the actual dom node seems to be missing,

        // although setting text on the currently hidden nodes will

        // work).  I found a workaround by listening the "refresh"

        // event which seems to first fire when all tree nodes are

        // ready.  Most ceartanly a big hack.

        // Wait for the Favorites to load, then wait for tree to render,

        // after which add the fav icons.

        //

        // Additionally all this is done after callParent, because the

        // getRootNode() will work after initComponent has run.

        // Probably not neccessary, because "refresh" should happen

        // after that anyway, but just to play it safe.

        // Do all this after callParent, because the getRootNode() will work

        // after initComponent has run.

        Docs.Favorites.setTree(this);

        Ext.getStore("Favorites").on("load", function() {

            this.getView().on("refresh", function(){

                this.getRootNode().cascadeBy(this.addFavIcons, this);

            }, this, {single: true});

            this.rendered ? this.initFavIcons() : this.on("render", this.initFavIcons, this);

        }, this);

    },

    initFavIcons: function() {

        this.getRootNode().cascadeBy(this.addFavIcons, this);

    },

    addFavIcons: function(node) {

        if (node.get("leaf")) {

            var cls = node.raw.clsName;