Adds some notes about unsupported endpoints

lib/cartodb/controllers/layergroup.js

@@ -69,6 +69,8 @@ LayergroupController.prototype.register = function(app) {
         '/static/bbox/:token/:west,:south,:east,:north/:width/:height.:format', cors(), userMiddleware,
         this.bbox.bind(this));
 
+    // Undocumented/non-supported API endpoint methods.
+    // Use at your own peril.
     app.get(app.base_url_mapconfig +
         '/:token/:layer/widget/:widgetName', cors(), userMiddleware,
         this.widget.bind(this));

lib/cartodb/controllers/map.js

@@ -306,6 +306,7 @@ MapController.prototype.afterLayergroupCreate = function(req, res, mapconfig, la
             layergroup.layergroupid = layergroup.layergroupid + ':' + result.lastUpdatedTime;
             layergroup.last_updated = new Date(result.lastUpdatedTime).toISOString();
 
+            // TODO this should take into account several URL patterns
             addWidgetsUrl(username, layergroup);
 
             if (req.method === 'GET') {
@@ -329,8 +330,6 @@ MapController.prototype.afterLayergroupCreate = function(req, res, mapconfig, la
 
 function addWidgetsUrl(username, layergroup) {
 
-//    global.environment.serverMetadata
-
     if (layergroup.metadata && Array.isArray(layergroup.metadata.layers)) {
         layergroup.metadata.layers = layergroup.metadata.layers.map(function(layer, layerIndex) {
             if (layer.widgets) {