diff --git a/composer.json b/composer.json
index 74cff7f..fa9b25d 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,6 @@
     "phpunit/phpunit-mock-objects": "dev-master#e60bb929c50ae4237aaf680a4f6773f4ee17f0a2",
     "zendframework/zend-feed": "2.2.*",
     "mikey179/vfsStream": "1.*",
-    "stack/builder": "1.0.*",
     "egulias/email-validator": "1.2.*"
   },
   "autoload": {
diff --git a/core/core.services.yml b/core/core.services.yml
index 7abab67..f6f8067 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -394,13 +394,6 @@ services:
     arguments: ['@controller_resolver', '@string_translation']
   http_kernel:
     class: Symfony\Component\HttpKernel\HttpKernel
-    factory_method: resolve
-    factory_service: http_kernel_factory
-    arguments: ['@http_kernel.basic']
-  http_kernel_factory:
-    class: Stack\Builder
-  http_kernel.basic:
-    class: Symfony\Component\HttpKernel\HttpKernel
     arguments: ['@event_dispatcher', '@controller_resolver', '@request_stack']
   http_middleware.reverse_proxy:
     class: Drupal\Core\StackMiddleware\ReverseProxyMiddleware
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php
index bf8efc0..56c563a 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php
@@ -9,6 +9,8 @@
 
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
 
 /**
  * Provides a compiler pass for stacked HTTP kernels.
@@ -21,24 +23,41 @@ class StackedKernelPass implements CompilerPassInterface {
    * {@inheritdoc}
    */
   public function process(ContainerBuilder $container) {
-    if (!$container->hasDefinition('http_kernel_factory')) {
+
+    if (!$container->hasDefinition('http_kernel')) {
       return;
     }
 
-    $http_kernel_factory = $container->getDefinition('http_kernel_factory');
-    $middleware_priorities = array();
-    $middleware_arguments = array();
+    $middlewares = array();
+    $priorities = array();
+
     foreach ($container->findTaggedServiceIds('http_middleware') as $id => $attributes) {
-      $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
-      $middleware_priorities[$id] = $priority;
-      $definition = $container->getDefinition($id);
-      $middleware_arguments[$id] = $definition->getArguments();
-      array_unshift($middleware_arguments[$id], $definition->getClass());
+      $priorities[$id] = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
+      $middlewares[$id] = $container->getDefinition($id);
+    }
+
+    if (empty($middlewares)) {
+      $container->addAliases(array('http_kernel_stack' => 'http_kernel'));
     }
-    array_multisort($middleware_priorities, SORT_DESC, $middleware_arguments, SORT_DESC);
+    else {
+      array_multisort($priorities, SORT_ASC, $middlewares);
+
+      $previous_id = 'http_kernel';
+      $first = $http_kernel = $container->getDefinition('http_kernel');
+
+      foreach ($middlewares as $id => $decorator) {
+        // Prepend the previous kernel as first constructor argument.
+        $arguments = $decorator->getArguments();
+        array_unshift($arguments, new Reference($previous_id));
+        $decorator->setArguments($arguments);
+
+        $previous_id = $id;
+        $http_kernel = $decorator;
+      }
 
-    foreach ($middleware_arguments as $id => $push_arguments) {
-      $http_kernel_factory->addMethodCall('push', $push_arguments);
+      // Register the 'stack' service as being the very first one http stacked
+      // kernel that will decorate all others.
+      $container->addAliases(array('http_kernel_stack' => $id));
     }
   }
 
diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index 8514448..0186e54 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -564,7 +564,7 @@ public function terminate(Request $request, Response $response) {
    */
   public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
     $this->boot();
-    return $this->getHttpKernel()->handle($request, $type, $catch);
+    return $this->getHttpKernelStack()->handle($request, $type, $catch);
   }
 
   /**
@@ -1148,6 +1148,15 @@ protected function getHttpKernel() {
   }
 
   /**
+   * Gets the http kernel stack from the container
+   *
+   * @return \Symfony\Component\HttpKernel\HttpKernelInterface
+   */
+  protected function getHttpKernelStack() {
+    return $this->container->get('http_kernel_stack');
+  }
+
+  /**
    * Gets the PHP code storage object to use for the compiled container.
    *
    * @return \Drupal\Component\PhpStorage\PhpStorageInterface
diff --git a/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php b/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
index 103f71f..dded3bf 100644
--- a/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
+++ b/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
   public function testRequest() {
     $request = new Request();
     /** @var \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel */
-    $http_kernel = \Drupal::service('http_kernel');
+    $http_kernel = \Drupal::service('http_kernel_stack');
     $http_kernel->handle($request);
 
     $this->assertEqual($request->attributes->get('_hello'), 'world');
diff --git a/core/vendor/stack/builder/.travis.yml b/core/vendor/stack/builder/.travis.yml
deleted file mode 100644
index 1d50df4..0000000
--- a/core/vendor/stack/builder/.travis.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-language: php
-
-php:
-  - 5.3.3
-  - 5.3
-  - 5.4
-  - 5.5
-  - hhvm
-
-before_script:
-  - composer self-update
-  - composer install --no-interaction --prefer-source
-
-script: phpunit --coverage-text
-
-matrix:
-  allow_failures:
-    - php: hhvm
-  fast_finish: true
diff --git a/core/vendor/stack/builder/CHANGELOG.md b/core/vendor/stack/builder/CHANGELOG.md
deleted file mode 100644
index f6f35d6..0000000
--- a/core/vendor/stack/builder/CHANGELOG.md
+++ /dev/null
@@ -1,14 +0,0 @@
-CHANGELOG
-=========
-
-* 1.0.2 (2014-xx-xx)
-
-  * Validate missing arguments (@bajbnet).
-
-* 1.0.1 (2013-10-25)
-
-  * Lower PHP requirement to 5.3.
-
-* 1.0.0 (2013-08-02)
-
-  * Initial release.
diff --git a/core/vendor/stack/builder/LICENSE b/core/vendor/stack/builder/LICENSE
deleted file mode 100644
index ceac72c..0000000
--- a/core/vendor/stack/builder/LICENSE
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (c) 2013 Igor Wiedler
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is furnished
-to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/core/vendor/stack/builder/README.md b/core/vendor/stack/builder/README.md
deleted file mode 100644
index 812406c..0000000
--- a/core/vendor/stack/builder/README.md
+++ /dev/null
@@ -1,62 +0,0 @@
-# Stack/Builder
-
-Builder for stack middlewares based on HttpKernelInterface.
-
-Stack/Builder is a small library that helps you construct a nested
-HttpKernelInterface decorator tree. It models it as a stack of middlewares.
-
-## Example
-
-If you want to decorate a [silex](https://github.com/fabpot/Silex) app with
-session and cache middlewares, you'll have to do something like this:
-
-    use Symfony\Component\HttpKernel\HttpCache\Store;
-
-    $app = new Silex\Application();
-
-    $app->get('/', function () {
-        return 'Hello World!';
-    });
-
-    $app = new Stack\Session(
-        new Symfony\Component\HttpKernel\HttpCache\HttpCache(
-            $app,
-            new Store(__DIR__.'/cache')
-        )
-    );
-
-This can get quite annoying indeed. Stack/Builder simplifies that:
-
-    $stack = (new Stack\Builder())
-        ->push('Stack\Session')
-        ->push('Symfony\Component\HttpKernel\HttpCache\HttpCache', new Store(__DIR__.'/cache'));
-
-    $app = $stack->resolve($app);
-
-As you can see, by arranging the layers as a stack, they become a lot easier
-to work with.
-
-In the front controller, you need to serve the request:
-
-    use Symfony\Component\HttpFoundation\Request;
-
-    $request = Request::createFromGlobals();
-    $response = $app->handle($request)->send();
-    $app->terminate($request, $response);
-
-Stack/Builder also supports pushing a `callable` on to the stack, for situations
-where instantiating middlewares might be more complicated. The `callable` should
-accept a `HttpKernelInterface` as the first argument and should also return a
-`HttpKernelInterface`. The example above could be rewritten as:
-
-    $stack = (new Stack\Builder())
-        ->push('Stack\Session')
-        ->push(function ($app) {
-            $cache = new HttpCache($app, new Store(__DIR__.'/cache'));
-            return $cache;
-        });
-
-## Inspiration
-
-* [Rack::Builder](http://rack.rubyforge.org/doc/Rack/Builder.html)
-* [HttpKernel middlewares](https://igor.io/2013/02/02/http-kernel-middlewares.html)
diff --git a/core/vendor/stack/builder/composer.json b/core/vendor/stack/builder/composer.json
deleted file mode 100644
index e9f164c..0000000
--- a/core/vendor/stack/builder/composer.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-    "name": "stack/builder",
-    "description": "Builder for stack middlewares based on HttpKernelInterface.",
-    "keywords": ["stack"],
-    "license": "MIT",
-    "authors": [
-        {
-            "name": "Igor Wiedler",
-            "email": "igor@wiedler.ch"
-        }
-    ],
-    "require": {
-        "php": ">=5.3.0",
-        "symfony/http-foundation": "~2.1",
-        "symfony/http-kernel": "~2.1"
-    },
-    "require-dev": {
-        "silex/silex": "~1.0"
-    },
-    "autoload": {
-        "psr-0": { "Stack": "src" }
-    },
-    "extra": {
-        "branch-alias": { "dev-master": "1.0-dev" }
-    }
-}
diff --git a/core/vendor/stack/builder/composer.lock b/core/vendor/stack/builder/composer.lock
deleted file mode 100644
index 26c6a99..0000000
--- a/core/vendor/stack/builder/composer.lock
+++ /dev/null
@@ -1,488 +0,0 @@
-{
-    "_readme": [
-        "This file locks the dependencies of your project to a known state",
-        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file"
-    ],
-    "hash": "78698481679eca710495d5aca028baaa",
-    "packages": [
-        {
-            "name": "psr/log",
-            "version": "1.0.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "shasum": ""
-            },
-            "type": "library",
-            "autoload": {
-                "psr-0": {
-                    "Psr\\Log\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2012-12-21 11:40:51"
-        },
-        {
-            "name": "symfony/debug",
-            "version": "v2.4.1",
-            "target-dir": "Symfony/Component/Debug",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/Debug.git",
-                "reference": "74110be5ec681a83fc5bd66dd5fd29fe85fe9c1f"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Debug/zipball/74110be5ec681a83fc5bd66dd5fd29fe85fe9c1f",
-                "reference": "74110be5ec681a83fc5bd66dd5fd29fe85fe9c1f",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "require-dev": {
-                "symfony/http-foundation": "~2.1",
-                "symfony/http-kernel": "~2.1"
-            },
-            "suggest": {
-                "symfony/http-foundation": "",
-                "symfony/http-kernel": ""
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.4-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\Debug\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony Debug Component",
-            "homepage": "http://symfony.com",
-            "time": "2014-01-01 09:02:49"
-        },
-        {
-            "name": "symfony/event-dispatcher",
-            "version": "v2.4.1",
-            "target-dir": "Symfony/Component/EventDispatcher",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/EventDispatcher.git",
-                "reference": "e3ba42f6a70554ed05749e61b829550f6ac33601"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/EventDispatcher/zipball/e3ba42f6a70554ed05749e61b829550f6ac33601",
-                "reference": "e3ba42f6a70554ed05749e61b829550f6ac33601",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "require-dev": {
-                "symfony/dependency-injection": "~2.0"
-            },
-            "suggest": {
-                "symfony/dependency-injection": "",
-                "symfony/http-kernel": ""
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.4-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\EventDispatcher\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony EventDispatcher Component",
-            "homepage": "http://symfony.com",
-            "time": "2013-12-28 08:12:03"
-        },
-        {
-            "name": "symfony/http-foundation",
-            "version": "v2.4.1",
-            "target-dir": "Symfony/Component/HttpFoundation",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/HttpFoundation.git",
-                "reference": "6c6b8a7bcd7e2cc920cd6acace563fdbf121d844"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/HttpFoundation/zipball/6c6b8a7bcd7e2cc920cd6acace563fdbf121d844",
-                "reference": "6c6b8a7bcd7e2cc920cd6acace563fdbf121d844",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.4-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\HttpFoundation\\": ""
-                },
-                "classmap": [
-                    "Symfony/Component/HttpFoundation/Resources/stubs"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony HttpFoundation Component",
-            "homepage": "http://symfony.com",
-            "time": "2014-01-05 02:10:50"
-        },
-        {
-            "name": "symfony/http-kernel",
-            "version": "v2.4.1",
-            "target-dir": "Symfony/Component/HttpKernel",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/HttpKernel.git",
-                "reference": "0605eedeb52c4d3a3144128d8336395a57be60d4"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/HttpKernel/zipball/0605eedeb52c4d3a3144128d8336395a57be60d4",
-                "reference": "0605eedeb52c4d3a3144128d8336395a57be60d4",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3",
-                "psr/log": "~1.0",
-                "symfony/debug": "~2.3",
-                "symfony/event-dispatcher": "~2.1",
-                "symfony/http-foundation": "~2.4"
-            },
-            "require-dev": {
-                "symfony/browser-kit": "~2.2",
-                "symfony/class-loader": "~2.1",
-                "symfony/config": "~2.0",
-                "symfony/console": "~2.2",
-                "symfony/dependency-injection": "~2.0",
-                "symfony/finder": "~2.0",
-                "symfony/process": "~2.0",
-                "symfony/routing": "~2.2",
-                "symfony/stopwatch": "~2.2",
-                "symfony/templating": "~2.2"
-            },
-            "suggest": {
-                "symfony/browser-kit": "",
-                "symfony/class-loader": "",
-                "symfony/config": "",
-                "symfony/console": "",
-                "symfony/dependency-injection": "",
-                "symfony/finder": ""
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.4-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\HttpKernel\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony HttpKernel Component",
-            "homepage": "http://symfony.com",
-            "time": "2014-01-05 02:12:11"
-        }
-    ],
-    "packages-dev": [
-        {
-            "name": "pimple/pimple",
-            "version": "v1.1.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/fabpot/Pimple.git",
-                "reference": "471c7d7c52ad6594e17b8ec33efdd1be592b5d83"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/fabpot/Pimple/zipball/471c7d7c52ad6594e17b8ec33efdd1be592b5d83",
-                "reference": "471c7d7c52ad6594e17b8ec33efdd1be592b5d83",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.1.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Pimple": "lib/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                }
-            ],
-            "description": "Pimple is a simple Dependency Injection Container for PHP 5.3",
-            "homepage": "http://pimple.sensiolabs.org",
-            "keywords": [
-                "container",
-                "dependency injection"
-            ],
-            "time": "2013-09-19 04:53:08"
-        },
-        {
-            "name": "silex/silex",
-            "version": "v1.1.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/silexphp/Silex.git",
-                "reference": "47cc7d6545450ef8a91f50c04e8c7b3b04fceae9"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/silexphp/Silex/zipball/47cc7d6545450ef8a91f50c04e8c7b3b04fceae9",
-                "reference": "47cc7d6545450ef8a91f50c04e8c7b3b04fceae9",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3",
-                "pimple/pimple": "~1.0",
-                "symfony/event-dispatcher": ">=2.3,<2.5-dev",
-                "symfony/http-foundation": ">=2.3,<2.5-dev",
-                "symfony/http-kernel": ">=2.3,<2.5-dev",
-                "symfony/routing": ">=2.3,<2.5-dev"
-            },
-            "require-dev": {
-                "doctrine/dbal": ">=2.2.0,<2.4.0-dev",
-                "monolog/monolog": "~1.4,>=1.4.1",
-                "phpunit/phpunit": "~3.7",
-                "swiftmailer/swiftmailer": "5.*",
-                "symfony/browser-kit": ">=2.3,<2.5-dev",
-                "symfony/config": ">=2.3,<2.5-dev",
-                "symfony/css-selector": ">=2.3,<2.5-dev",
-                "symfony/debug": ">=2.3,<2.5-dev",
-                "symfony/dom-crawler": ">=2.3,<2.5-dev",
-                "symfony/finder": ">=2.3,<2.5-dev",
-                "symfony/form": ">=2.3,<2.5-dev",
-                "symfony/locale": ">=2.3,<2.5-dev",
-                "symfony/monolog-bridge": ">=2.3,<2.5-dev",
-                "symfony/options-resolver": ">=2.3,<2.5-dev",
-                "symfony/process": ">=2.3,<2.5-dev",
-                "symfony/security": ">=2.3,<2.5-dev",
-                "symfony/serializer": ">=2.3,<2.5-dev",
-                "symfony/translation": ">=2.3,<2.5-dev",
-                "symfony/twig-bridge": ">=2.3,<2.5-dev",
-                "symfony/validator": ">=2.3,<2.5-dev",
-                "twig/twig": ">=1.8.0,<2.0-dev"
-            },
-            "suggest": {
-                "symfony/browser-kit": ">=2.3,<2.5-dev",
-                "symfony/css-selector": ">=2.3,<2.5-dev",
-                "symfony/dom-crawler": ">=2.3,<2.5-dev",
-                "symfony/form": ">=2.3,<2.5-dev"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.1.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Silex": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Igor Wiedler",
-                    "email": "igor@wiedler.ch",
-                    "homepage": "http://wiedler.ch/igor/"
-                }
-            ],
-            "description": "The PHP micro-framework based on the Symfony2 Components",
-            "homepage": "http://silex.sensiolabs.org",
-            "keywords": [
-                "microframework"
-            ],
-            "time": "2013-10-30 08:53:26"
-        },
-        {
-            "name": "symfony/routing",
-            "version": "v2.4.1",
-            "target-dir": "Symfony/Component/Routing",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/Routing.git",
-                "reference": "4abfb500aab8be458c9e3a227ea56b190584f78a"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Routing/zipball/4abfb500aab8be458c9e3a227ea56b190584f78a",
-                "reference": "4abfb500aab8be458c9e3a227ea56b190584f78a",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "require-dev": {
-                "doctrine/annotations": "~1.0",
-                "psr/log": "~1.0",
-                "symfony/config": "~2.2",
-                "symfony/expression-language": "~2.4",
-                "symfony/yaml": "~2.0"
-            },
-            "suggest": {
-                "doctrine/annotations": "For using the annotation loader",
-                "symfony/config": "For using the all-in-one router or any loader",
-                "symfony/expression-language": "For using expression matching",
-                "symfony/yaml": "For using the YAML loader"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.4-dev"
-                }
-            },
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\Routing\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony Routing Component",
-            "homepage": "http://symfony.com",
-            "keywords": [
-                "router",
-                "routing",
-                "uri",
-                "url"
-            ],
-            "time": "2014-01-05 02:10:50"
-        }
-    ],
-    "aliases": [
-
-    ],
-    "minimum-stability": "stable",
-    "stability-flags": [
-
-    ],
-    "platform": {
-        "php": ">=5.3.0"
-    },
-    "platform-dev": [
-
-    ]
-}
diff --git a/core/vendor/stack/builder/phpunit.xml.dist b/core/vendor/stack/builder/phpunit.xml.dist
deleted file mode 100644
index a2437ec..0000000
--- a/core/vendor/stack/builder/phpunit.xml.dist
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<phpunit backupGlobals="false"
-         colors="true"
-         bootstrap="vendor/autoload.php"
->
-    <testsuites>
-        <testsuite name="unit">
-            <directory>./tests/unit/</directory>
-        </testsuite>
-    </testsuites>
-
-    <testsuites>
-        <testsuite name="integration">
-            <directory>./tests/integration/</directory>
-        </testsuite>
-    </testsuites>
-
-    <testsuites>
-        <testsuite name="functional">
-            <directory>./tests/functional/</directory>
-        </testsuite>
-    </testsuites>
-
-    <filter>
-        <whitelist>
-            <directory>./src/</directory>
-        </whitelist>
-    </filter>
-</phpunit>
diff --git a/core/vendor/stack/builder/src/Stack/Builder.php b/core/vendor/stack/builder/src/Stack/Builder.php
deleted file mode 100644
index c7ee05a..0000000
--- a/core/vendor/stack/builder/src/Stack/Builder.php
+++ /dev/null
@@ -1,63 +0,0 @@
-<?php
-
-namespace Stack;
-
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-
-class Builder
-{
-    private $specs;
-
-    public function __construct()
-    {
-        $this->specs = new \SplStack();
-    }
-
-    public function unshift(/*$kernelClass, $args...*/)
-    {
-        if (func_num_args() === 0) {
-            throw new \InvalidArgumentException("Missing argument(s) when calling unshift");
-        }
-
-        $spec = func_get_args();
-        $this->specs->unshift($spec);
-
-        return $this;
-    }
-
-    public function push(/*$kernelClass, $args...*/)
-    {
-        if (func_num_args() === 0) {
-            throw new \InvalidArgumentException("Missing argument(s) when calling push");
-        }
-
-        $spec = func_get_args();
-        $this->specs->push($spec);
-
-        return $this;
-    }
-
-    public function resolve(HttpKernelInterface $app)
-    {
-        $middlewares = array($app);
-
-        foreach ($this->specs as $spec) {
-            $args = $spec;
-            $firstArg = array_shift($args);
-
-            if (is_callable($firstArg)) {
-                $app = $firstArg($app);
-            } else {
-                $kernelClass = $firstArg;
-                array_unshift($args, $app);
-
-                $reflection = new \ReflectionClass($kernelClass);
-                $app = $reflection->newInstanceArgs($args);
-            }
-
-            array_unshift($middlewares, $app);
-        }
-
-        return new StackedHttpKernel($app, $middlewares);
-    }
-}
diff --git a/core/vendor/stack/builder/src/Stack/StackedHttpKernel.php b/core/vendor/stack/builder/src/Stack/StackedHttpKernel.php
deleted file mode 100644
index 2b96dd9..0000000
--- a/core/vendor/stack/builder/src/Stack/StackedHttpKernel.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-namespace Stack;
-
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\HttpKernel\TerminableInterface;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-
-class StackedHttpKernel implements HttpKernelInterface, TerminableInterface
-{
-    private $app;
-    private $middlewares = array();
-
-    public function __construct(HttpKernelInterface $app, array $middlewares)
-    {
-        $this->app = $app;
-        $this->middlewares = $middlewares;
-    }
-
-    public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
-    {
-        return $this->app->handle($request, $type, $catch);
-    }
-
-    public function terminate(Request $request, Response $response)
-    {
-        foreach ($this->middlewares as $kernel) {
-            if ($kernel instanceof TerminableInterface) {
-                $kernel->terminate($request, $response);
-            }
-        }
-    }
-}
diff --git a/core/vendor/stack/builder/tests/functional/SilexApplicationTest.php b/core/vendor/stack/builder/tests/functional/SilexApplicationTest.php
deleted file mode 100644
index 5636336..0000000
--- a/core/vendor/stack/builder/tests/functional/SilexApplicationTest.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-namespace functional;
-
-use Silex\Application;
-use Stack\Builder;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-
-class SilexApplicationTest extends \PHPUnit_Framework_TestCase
-{
-    public function testWithAppendMiddlewares()
-    {
-        $app = new Application();
-
-        $app->get('/foo', function () {
-            return 'bar';
-        });
-
-        $finished = false;
-
-        $app->finish(function () use (&$finished) {
-            $finished = true;
-        });
-
-        $stack = new Builder();
-        $stack
-            ->push('functional\Append', '.A')
-            ->push('functional\Append', '.B');
-
-        $app = $stack->resolve($app);
-
-        $request = Request::create('/foo');
-        $response = $app->handle($request);
-        $app->terminate($request, $response);
-
-        $this->assertSame('bar.B.A', $response->getContent());
-        $this->assertTrue($finished);
-    }
-}
-
-class Append implements HttpKernelInterface
-{
-    private $app;
-    private $appendix;
-
-    public function __construct(HttpKernelInterface $app, $appendix)
-    {
-        $this->app = $app;
-        $this->appendix = $appendix;
-    }
-
-    public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
-    {
-        $response = clone $this->app->handle($request, $type, $catch);
-        $response->setContent($response->getContent().$this->appendix);
-
-        return $response;
-    }
-}
diff --git a/core/vendor/stack/builder/tests/unit/Stack/BuilderTest.php b/core/vendor/stack/builder/tests/unit/Stack/BuilderTest.php
deleted file mode 100644
index 4092d01..0000000
--- a/core/vendor/stack/builder/tests/unit/Stack/BuilderTest.php
+++ /dev/null
@@ -1,215 +0,0 @@
-<?php
-
-namespace Stack;
-
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\HttpKernel\TerminableInterface;
-
-/** @covers Stack\Builder */
-class BuilderTest extends \PHPUnit_Framework_TestCase
-{
-    /** @test */
-    public function withoutMiddlewaresItShouldReturnOriginalResponse()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertInstanceOf('Stack\StackedHttpKernel', $resolved);
-        $this->assertSame('ok', $response->getContent());
-    }
-
-    /** @test */
-    public function resolvedKernelShouldDelegateTerminateCalls()
-    {
-        $app = $this->getTerminableMock();
-
-        $stack = new Builder();
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = new Response('ok');
-
-        $resolved->handle($request);
-        $resolved->terminate($request, $response);
-    }
-
-    /** @test */
-    public function pushShouldReturnSelf()
-    {
-        $stack = new Builder();
-        $this->assertSame($stack, $stack->push('Stack\AppendA'));
-    }
-
-    /** @test */
-    public function pushShouldThrowOnInvalidInput()
-    {
-        $this->setExpectedException('InvalidArgumentException', 'Missing argument(s) when calling push');
-        $stack = new Builder();
-        $stack->push();
-    }
-
-    /** @test */
-    public function unshiftShouldReturnSelf()
-    {
-        $stack = new Builder();
-        $this->assertSame($stack, $stack->unshift('Stack\AppendA'));
-    }
-
-    /** @test */
-    public function unshiftShouldThrowOnInvalidInput()
-    {
-        $this->setExpectedException('InvalidArgumentException', 'Missing argument(s) when calling unshift');
-        $stack = new Builder();
-        $stack->unshift();
-    }
-
-    /** @test */
-    public function appendMiddlewareShouldAppendToBody()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $stack->push('Stack\AppendA');
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertSame('ok.A', $response->getContent());
-    }
-
-    /** @test */
-    public function unshiftMiddlewareShouldPutMiddlewareBeforePushed()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $stack->push('Stack\Append', '2.');
-        $stack->unshift('Stack\Append', '1.');
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertSame('ok2.1.', $response->getContent());
-    }
-
-    /** @test */
-    public function stackedMiddlewaresShouldWrapInReverseOrder()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $stack->push('Stack\AppendA');
-        $stack->push('Stack\AppendB');
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertSame('ok.B.A', $response->getContent());
-    }
-
-    /** @test */
-    public function resolveShouldPassPushArgumentsToMiddlewareConstructor()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $stack->push('Stack\Append', '.foo');
-        $stack->push('Stack\Append', '.bar');
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertSame('ok.bar.foo', $response->getContent());
-    }
-
-    /** @test */
-    public function resolveShouldCallSpecFactories()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-
-        $stack = new Builder();
-        $stack->push(function ($app) { return new Append($app, '.foo'); });
-        $stack->push(function ($app) { return new Append($app, '.bar'); });
-        $resolved = $stack->resolve($app);
-
-        $request = Request::create('/');
-        $response = $resolved->handle($request);
-
-        $this->assertSame('ok.bar.foo', $response->getContent());
-    }
-
-    private function getHttpKernelMock(Response $response)
-    {
-        $app = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
-        $app->expects($this->any())
-            ->method('handle')
-            ->with($this->isInstanceOf('Symfony\Component\HttpFoundation\Request'))
-            ->will($this->returnValue($response));
-
-        return $app;
-    }
-
-    private function getTerminableMock()
-    {
-        $app = $this->getMock('Stack\TerminableHttpKernel');
-        $app->expects($this->once())
-            ->method('terminate')
-            ->with(
-                $this->isInstanceOf('Symfony\Component\HttpFoundation\Request'),
-                $this->isInstanceOf('Symfony\Component\HttpFoundation\Response')
-            );
-
-        return $app;
-    }
-}
-
-abstract class TerminableHttpKernel implements HttpKernelInterface, TerminableInterface
-{
-}
-
-class Append implements HttpKernelInterface
-{
-    private $app;
-    private $appendix;
-
-    public function __construct(HttpKernelInterface $app, $appendix)
-    {
-        $this->app = $app;
-        $this->appendix = $appendix;
-    }
-
-    public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
-    {
-        $response = clone $this->app->handle($request, $type, $catch);
-        $response->setContent($response->getContent().$this->appendix);
-
-        return $response;
-    }
-}
-
-class AppendA extends Append
-{
-    public function __construct(HttpKernelInterface $app)
-    {
-        parent::__construct($app, '.A');
-    }
-}
-
-class AppendB extends Append
-{
-    public function __construct(HttpKernelInterface $app)
-    {
-        parent::__construct($app, '.B');
-    }
-}
diff --git a/core/vendor/stack/builder/tests/unit/Stack/StackedHttpKernelTest.php b/core/vendor/stack/builder/tests/unit/Stack/StackedHttpKernelTest.php
deleted file mode 100644
index e2ced54..0000000
--- a/core/vendor/stack/builder/tests/unit/Stack/StackedHttpKernelTest.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-
-namespace Stack;
-
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\HttpKernel\TerminableInterface;
-
-class StackedHttpKernelTest extends \PHPUnit_Framework_TestCase
-{
-    /** @test */
-    public function handleShouldDelegateToApp()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-        $kernel = new StackedHttpKernel($app, array($app));
-
-        $request = Request::create('/');
-        $response = $kernel->handle($request);
-
-        $this->assertSame('ok', $response->getContent());
-    }
-
-    /** @test */
-    public function handleShouldStillDelegateToAppWithMiddlewares()
-    {
-        $app = $this->getHttpKernelMock(new Response('ok'));
-        $foo = $this->getHttpKernelMock(new Response('foo'));
-        $bar = $this->getHttpKernelMock(new Response('bar'));
-        $kernel = new StackedHttpKernel($app, array($app, $foo, $bar));
-
-        $request = Request::create('/');
-        $response = $kernel->handle($request);
-
-        $this->assertSame('ok', $response->getContent());
-    }
-
-    /** @test */
-    public function terminateShouldDelegateToMiddlewares()
-    {
-        $app = $this->getTerminableMock(new Response('ok'));
-        $foo = $this->getTerminableMock();
-        $bar = $this->getTerminableMock();
-        $kernel = new StackedHttpKernel($app, array($app, $foo, $bar));
-
-        $request = Request::create('/');
-        $response = $kernel->handle($request);
-        $kernel->terminate($request, $response);
-    }
-
-    private function getHttpKernelMock(Response $response)
-    {
-        $app = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
-        $app->expects($this->any())
-            ->method('handle')
-            ->with($this->isInstanceOf('Symfony\Component\HttpFoundation\Request'))
-            ->will($this->returnValue($response));
-
-        return $app;
-    }
-
-    private function getTerminableMock(Response $response = null)
-    {
-        $app = $this->getMock('Stack\TerminableHttpKernel');
-        if ($response) {
-            $app->expects($this->any())
-                ->method('handle')
-                ->with($this->isInstanceOf('Symfony\Component\HttpFoundation\Request'))
-                ->will($this->returnValue($response));
-        }
-        $app->expects($this->once())
-            ->method('terminate')
-            ->with(
-                $this->isInstanceOf('Symfony\Component\HttpFoundation\Request'),
-                $this->isInstanceOf('Symfony\Component\HttpFoundation\Response')
-            );
-
-        return $app;
-    }
-}
