Need to re-add the less task in Gruntfile for the 4.1 css to get made

Gruntfile.js

@@ -177,7 +177,7 @@ module.exports = function (grunt) {
   });
 
   // establish grunt default
-  var defaultTasks = ['sass', 'postcss', 'uglify', 'requirejs'];
+  var defaultTasks = ['less', 'sass', 'postcss', 'uglify', 'requirejs'];
   var localTasks = defaultTasks.slice();
   if (!allMixinsExist) {
     defaultTasks.unshift('curl-dir');