workaround for chrome extension removing css comments

plugins/c9.ide.ui/ui.js

@@ -8,7 +8,7 @@ define(function(require, module, exports) {
         require("plugins/c9.ide.ui/codebox")(imports.apf);
         var settings;
 
-        var packed = require("text!./style.css").length === 0;
+        var packed = require("text!./style.less").length === 0;
         var less = require("./lib_less1.5");
         if (less) less.async = true;
         var packedThemes = packed || options.packedThemes !== false;