No support for IE10 when minifying css files

lib/tools/redownload/fileMinifier.js

@@ -162,7 +162,7 @@ var FileMinifier = function() {
         var deferred = Q.defer();
 
         try {
-            var result = new CleanCSS({compatibility: 'ie8'}).minify(body);
+            var result = new CleanCSS().minify(body);
             deferred.resolve(result.styles);
         } catch(err) {
             deferred.reject(err);