fix(browser): make Firefox to work with es6-shim

es6-shim.js must be loaded first

tools/broccoli/html-replace/SCRIPTS.html

@@ -1,6 +1,6 @@
+<script src="es6-shim.js" type="text/javascript"></script>
 <script src="zone-microtask.js" type="text/javascript"></script>
 <script src="long-stack-trace-zone.js" type="text/javascript"></script>
-<script src="es6-shim.js" type="text/javascript"></script>
 <script src="system.src.js" type="text/javascript"></script>
 <script src="Reflect.js" type="text/javascript"></script>
 <script type="text/javascript">

tools/broccoli/html-replace/SCRIPTS_benchmarks.html

@@ -1,7 +1,7 @@
+<script src="es6-shim.js" type="text/javascript"></script>
 <script src="zone-microtask.js" type="text/javascript"></script>
 <script src="long-stack-trace-zone.js" type="text/javascript"></script>
 <script src="url_params_to_form.js" type="text/javascript"></script>
-<script src="es6-shim.js" type="text/javascript"></script>
 <script src="system.src.js" type="text/javascript"></script>
 <script src="Reflect.js" type="text/javascript"></script>
 <script type="text/javascript">

tools/broccoli/html-replace/SCRIPTS_benchmarks_external.html

@@ -1,8 +1,8 @@
+<script src="es6-shim.js" type="text/javascript"></script>
 <script src="zone-microtask.js" type="text/javascript"></script>
 <script src="long-stack-trace-zone.js" type="text/javascript"></script>
 <script src="angular.js" type="text/javascript"></script>
 <script src="url_params_to_form.js" type="text/javascript"></script>
-<script src="es6-shim.js" type="text/javascript"></script>
 <script src="system.src.js" type="text/javascript"></script>
 <script src="Reflect.js" type="text/javascript"></script>
 <script type="text/javascript">

tools/broccoli/js-replace/SCRIPTS.js

@@ -1,2 +1,2 @@
-importScripts("zone-microtask.js", "long-stack-trace-zone.js", "es6-shim.js", "system.src.js",
+importScripts("es6-shim.js", "zone-microtask.js", "long-stack-trace-zone.js", "system.src.js",
               "Reflect.js");

tools/broccoli/trees/browser_tree.ts

@@ -138,12 +138,12 @@ module.exports = function makeBrowserTree(options, destinationPath) {
 
   var vendorScriptsTree = flatten(new Funnel('.', {
     files: [
+      'node_modules/es6-shim/es6-shim.js',
       'node_modules/zone.js/dist/zone-microtask.js',
       'node_modules/zone.js/dist/long-stack-trace-zone.js',
       'node_modules/systemjs/dist/system.src.js',
       'node_modules/base64-js/lib/b64.js',
-      'node_modules/reflect-metadata/Reflect.js',
-      'node_modules/es6-shim/es6-shim.js'
+      'node_modules/reflect-metadata/Reflect.js'
     ]
   }));