diff --git a/app/AppKernel.php b/app/AppKernel.php
index 3789b326e0..8b6b6906d3 100644
--- a/app/AppKernel.php
+++ b/app/AppKernel.php
@@ -23,6 +23,10 @@ public function registerBundles()
             $bundles[] = new Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
             $bundles[] = new Sensio\Bundle\DistributionBundle\SensioDistributionBundle();
             $bundles[] = new Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
+
+            if ('dev' === $this->getEnvironment()) {
+                $bundles[] = new Symfony\Bundle\WebServerBundle\WebServerBundle();
+            }
         }
 
         return $bundles;
diff --git a/composer.lock b/composer.lock
index 5a9bcd66b8..9e493a684b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "e8806838d7235c3d2ab386293836949f",
+    "content-hash": "dbdc24fc713f6a6da88dcdff23201f1b",
     "packages": [
         {
             "name": "doctrine/annotations",
@@ -700,22 +700,22 @@
         },
         {
             "name": "doctrine/orm",
-            "version": "v2.5.5",
+            "version": "v2.5.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/doctrine2.git",
-                "reference": "73e4be7c7b3ba26f96b781a40b33feba4dfa6d45"
+                "reference": "e6c434196c8ef058239aaa0724b4aadb0107940b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/doctrine2/zipball/73e4be7c7b3ba26f96b781a40b33feba4dfa6d45",
-                "reference": "73e4be7c7b3ba26f96b781a40b33feba4dfa6d45",
+                "url": "https://api.github.com/repos/doctrine/doctrine2/zipball/e6c434196c8ef058239aaa0724b4aadb0107940b",
+                "reference": "e6c434196c8ef058239aaa0724b4aadb0107940b",
                 "shasum": ""
             },
             "require": {
                 "doctrine/cache": "~1.4",
                 "doctrine/collections": "~1.2",
-                "doctrine/common": ">=2.5-dev,<2.7-dev",
+                "doctrine/common": ">=2.5-dev,<2.8-dev",
                 "doctrine/dbal": ">=2.5-dev,<2.6-dev",
                 "doctrine/instantiator": "~1.0.1",
                 "ext-pdo": "*",
@@ -772,7 +772,7 @@
                 "database",
                 "orm"
             ],
-            "time": "2016-09-10T18:51:13+00:00"
+            "time": "2016-12-18T15:42:34+00:00"
         },
         {
             "name": "incenteev/composer-parameter-handler",
@@ -1096,16 +1096,16 @@
         },
         {
             "name": "sensio/distribution-bundle",
-            "version": "v5.0.15",
+            "version": "v5.0.17",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sensiolabs/SensioDistributionBundle.git",
-                "reference": "d294b0665cf09c799e9c1993d5c776a5bf55cb85"
+                "reference": "4e98a1a6d3935d05414bd11e421a2047c93619f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sensiolabs/SensioDistributionBundle/zipball/d294b0665cf09c799e9c1993d5c776a5bf55cb85",
-                "reference": "d294b0665cf09c799e9c1993d5c776a5bf55cb85",
+                "url": "https://api.github.com/repos/sensiolabs/SensioDistributionBundle/zipball/4e98a1a6d3935d05414bd11e421a2047c93619f7",
+                "reference": "4e98a1a6d3935d05414bd11e421a2047c93619f7",
                 "shasum": ""
             },
             "require": {
@@ -1144,20 +1144,20 @@
                 "configuration",
                 "distribution"
             ],
-            "time": "2016-12-06T07:29:27+00:00"
+            "time": "2017-01-04T13:35:35+00:00"
         },
         {
             "name": "sensio/framework-extra-bundle",
-            "version": "v3.0.16",
+            "version": "v3.0.18",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sensiolabs/SensioFrameworkExtraBundle.git",
-                "reference": "507a15f56fa7699f6cc8c2c7de4080b19ce22546"
+                "reference": "c38bc608e12e81089d5d9dfbf72775ed553c61af"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sensiolabs/SensioFrameworkExtraBundle/zipball/507a15f56fa7699f6cc8c2c7de4080b19ce22546",
-                "reference": "507a15f56fa7699f6cc8c2c7de4080b19ce22546",
+                "url": "https://api.github.com/repos/sensiolabs/SensioFrameworkExtraBundle/zipball/c38bc608e12e81089d5d9dfbf72775ed553c61af",
+                "reference": "c38bc608e12e81089d5d9dfbf72775ed553c61af",
                 "shasum": ""
             },
             "require": {
@@ -1166,14 +1166,20 @@
                 "symfony/framework-bundle": "~2.3|~3.0"
             },
             "require-dev": {
+                "symfony/asset": "~2.7|~3.0",
                 "symfony/browser-kit": "~2.3|~3.0",
                 "symfony/dom-crawler": "~2.3|~3.0",
                 "symfony/expression-language": "~2.4|~3.0",
                 "symfony/finder": "~2.3|~3.0",
-                "symfony/phpunit-bridge": "~2.7|~3.0",
+                "symfony/phpunit-bridge": "~3.2",
+                "symfony/psr-http-message-bridge": "^0.3",
                 "symfony/security-bundle": "~2.4|~3.0",
+                "symfony/templating": "~2.3|~3.0",
+                "symfony/translation": "~2.3|~3.0",
                 "symfony/twig-bundle": "~2.3|~3.0",
-                "twig/twig": "~1.11|~2.0"
+                "symfony/yaml": "~2.3|~3.0",
+                "twig/twig": "~1.11|~2.0",
+                "zendframework/zend-diactoros": "^1.3"
             },
             "suggest": {
                 "symfony/expression-language": "",
@@ -1206,7 +1212,7 @@
                 "annotations",
                 "controllers"
             ],
-            "time": "2016-03-25T17:08:27+00:00"
+            "time": "2016-12-14T08:30:06+00:00"
         },
         {
             "name": "sensiolabs/security-checker",
@@ -1254,23 +1260,24 @@
         },
         {
             "name": "swiftmailer/swiftmailer",
-            "version": "v5.4.4",
+            "version": "v5.4.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/swiftmailer/swiftmailer.git",
-                "reference": "545ce9136690cea74f98f86fbb9c92dd9ab1a756"
+                "reference": "cd142238a339459b10da3d8234220963f392540c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/swiftmailer/swiftmailer/zipball/545ce9136690cea74f98f86fbb9c92dd9ab1a756",
-                "reference": "545ce9136690cea74f98f86fbb9c92dd9ab1a756",
+                "url": "https://api.github.com/repos/swiftmailer/swiftmailer/zipball/cd142238a339459b10da3d8234220963f392540c",
+                "reference": "cd142238a339459b10da3d8234220963f392540c",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.3"
             },
             "require-dev": {
-                "mockery/mockery": "~0.9.1"
+                "mockery/mockery": "~0.9.1",
+                "symfony/phpunit-bridge": "~3.2"
             },
             "type": "library",
             "extra": {
@@ -1303,24 +1310,24 @@
                 "mail",
                 "mailer"
             ],
-            "time": "2016-11-24T01:01:23+00:00"
+            "time": "2016-12-29T10:02:40+00:00"
         },
         {
             "name": "symfony/monolog-bundle",
-            "version": "3.0.1",
+            "version": "v3.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/monolog-bundle.git",
-                "reference": "5f2d2d62530cd66be361216107869a3b061045db"
+                "reference": "804425dfceec0097bf3e5dea3a73d91e055686be"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/monolog-bundle/zipball/5f2d2d62530cd66be361216107869a3b061045db",
-                "reference": "5f2d2d62530cd66be361216107869a3b061045db",
+                "url": "https://api.github.com/repos/symfony/monolog-bundle/zipball/804425dfceec0097bf3e5dea3a73d91e055686be",
+                "reference": "804425dfceec0097bf3e5dea3a73d91e055686be",
                 "shasum": ""
             },
             "require": {
-                "monolog/monolog": "~1.18",
+                "monolog/monolog": "~1.22",
                 "php": ">=5.3.2",
                 "symfony/config": "~2.7|~3.0",
                 "symfony/dependency-injection": "~2.7|~3.0",
@@ -1363,7 +1370,7 @@
                 "log",
                 "logging"
             ],
-            "time": "2016-11-15T15:54:07+00:00"
+            "time": "2017-01-03T12:32:45+00:00"
         },
         {
             "name": "symfony/polyfill-apcu",
@@ -1704,16 +1711,16 @@
         },
         {
             "name": "symfony/swiftmailer-bundle",
-            "version": "v2.4.0",
+            "version": "v2.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/swiftmailer-bundle.git",
-                "reference": "d7b7bd6bb6e9b32ebc5f9778f94d4b4e4af5d069"
+                "reference": "ad751095576ce0c12a284e30e3fff80c91f27225"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/swiftmailer-bundle/zipball/d7b7bd6bb6e9b32ebc5f9778f94d4b4e4af5d069",
-                "reference": "d7b7bd6bb6e9b32ebc5f9778f94d4b4e4af5d069",
+                "url": "https://api.github.com/repos/symfony/swiftmailer-bundle/zipball/ad751095576ce0c12a284e30e3fff80c91f27225",
+                "reference": "ad751095576ce0c12a284e30e3fff80c91f27225",
                 "shasum": ""
             },
             "require": {
@@ -1759,20 +1766,20 @@
             ],
             "description": "Symfony SwiftmailerBundle",
             "homepage": "http://symfony.com",
-            "time": "2016-10-27T17:59:30+00:00"
+            "time": "2016-12-20T04:44:33+00:00"
         },
         {
             "name": "symfony/symfony",
-            "version": "v3.2.1",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/symfony.git",
-                "reference": "5824d423678a0cc44f3eb46efc246aecd1836dd7"
+                "reference": "6f6100a8e170fafffb47f573a2709dd5368ffa5f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/symfony/zipball/5824d423678a0cc44f3eb46efc246aecd1836dd7",
-                "reference": "5824d423678a0cc44f3eb46efc246aecd1836dd7",
+                "url": "https://api.github.com/repos/symfony/symfony/zipball/6f6100a8e170fafffb47f573a2709dd5368ffa5f",
+                "reference": "6f6100a8e170fafffb47f573a2709dd5368ffa5f",
                 "shasum": ""
             },
             "require": {
@@ -1840,6 +1847,7 @@
                 "symfony/validator": "self.version",
                 "symfony/var-dumper": "self.version",
                 "symfony/web-profiler-bundle": "self.version",
+                "symfony/web-server-bundle": "self.version",
                 "symfony/workflow": "self.version",
                 "symfony/yaml": "self.version"
             },
@@ -1862,7 +1870,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.2-dev"
+                    "dev-master": "3.3-dev"
                 }
             },
             "autoload": {
@@ -1901,20 +1909,20 @@
             "keywords": [
                 "framework"
             ],
-            "time": "2016-12-13T13:20:15+00:00"
+            "time": "2017-01-06 15:23:52"
         },
         {
             "name": "twig/twig",
-            "version": "v1.28.2",
+            "version": "v1.30.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/twigphp/Twig.git",
-                "reference": "b22ce0eb070e41f7cba65d78fe216de29726459c"
+                "reference": "c6ff71094fde15d12398eaba029434b013dc5e59"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/twigphp/Twig/zipball/b22ce0eb070e41f7cba65d78fe216de29726459c",
-                "reference": "b22ce0eb070e41f7cba65d78fe216de29726459c",
+                "url": "https://api.github.com/repos/twigphp/Twig/zipball/c6ff71094fde15d12398eaba029434b013dc5e59",
+                "reference": "c6ff71094fde15d12398eaba029434b013dc5e59",
                 "shasum": ""
             },
             "require": {
@@ -1927,7 +1935,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.28-dev"
+                    "dev-master": "1.30-dev"
                 }
             },
             "autoload": {
@@ -1962,7 +1970,7 @@
             "keywords": [
                 "templating"
             ],
-            "time": "2016-11-23T18:41:40+00:00"
+            "time": "2016-12-23T11:06:22+00:00"
         }
     ],
     "packages-dev": [
@@ -2079,7 +2087,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "symfony/symfony": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/var/SymfonyRequirements.php b/var/SymfonyRequirements.php
index 7e7723af31..7e7a99de92 100644
--- a/var/SymfonyRequirements.php
+++ b/var/SymfonyRequirements.php
@@ -780,7 +780,11 @@ protected function getRealpathCacheSize()
     {
         $size = ini_get('realpath_cache_size');
         $size = trim($size);
-        $unit = strtolower(substr($size, -1, 1));
+        $unit = '';
+        if (!ctype_digit($size)) {
+            $unit = strtolower(substr($size, -1, 1));
+            $size = (int) substr($size, 0, -1);
+        }
         switch ($unit) {
             case 'g':
                 return $size * 1024 * 1024 * 1024;