AB#5820 - Copy client files into both netcore and framework executables

src/Umbraco.Web.UI.Client/gulp/tasks/js.js

@@ -16,10 +16,12 @@ function js() {
     //we run multiple streams, so merge them all together
     var stream = new MergeStream();
 
-    stream.add(
-        gulp.src(config.sources.globs.js).pipe( gulp.dest(config.root + config.targets.js) )
-    );
-
+    var task = gulp.src(config.sources.globs.js);
+    _.forEach(config.roots, function(root){
+        task = task.pipe( gulp.dest(root + config.targets.js) )
+    })
+    stream.add(task);
+  
     _.forEach(config.sources.js, function (group) {
         stream.add(
             processJs(group.files, group.out)