Install multiple files refs, instead of multiple files.src refs, as it

prevents the autovivification from failing when the source hasn't been
defined in the config.

@@ -240,7 +240,11 @@ module.exports = function (grunt) {
 
         function jscheckerAddExtra(src, container, dest) {
             if (src) {
-                container[dest] = (container[dest] || []).concat(src);
+                _.each(src, function(value) {
+                    var data = {};
+                    data[dest] = value;
+                    container.push(data);
+                });
             }
         }
         function createJschecker(name, browserOptions, modelOptions, viewOptions) {