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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2015-06-21 13:59:46"
+        },
+        {
+            "name": "symfony/browser-kit",
+            "version": "v3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/browser-kit.git",
+                "reference": "dde849a0485b70a24b36f826ed3fb95b904d80c3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/browser-kit/zipball/dde849a0485b70a24b36f826ed3fb95b904d80c3",
+                "reference": "dde849a0485b70a24b36f826ed3fb95b904d80c3",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9",
+                "symfony/dom-crawler": "~2.8|~3.0"
+            },
+            "require-dev": {
+                "symfony/css-selector": "~2.8|~3.0",
+                "symfony/process": "~2.8|~3.0"
+            },
+            "suggest": {
+                "symfony/process": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\BrowserKit\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony BrowserKit Component",
+            "homepage": "https://symfony.com",
+            "time": "2016-01-27 11:34:55"
+        },
+        {
+            "name": "symfony/css-selector",
+            "version": "v3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/css-selector.git",
+                "reference": "6605602690578496091ac20ec7a5cbd160d4dff4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/css-selector/zipball/6605602690578496091ac20ec7a5cbd160d4dff4",
+                "reference": "6605602690578496091ac20ec7a5cbd160d4dff4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\CssSelector\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jean-François Simon",
+                    "email": "jeanfrancois.simon@sensiolabs.com"
+                },
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony CssSelector Component",
+            "homepage": "https://symfony.com",
+            "time": "2016-01-27 05:14:46"
+        },
+        {
+            "name": "symfony/dom-crawler",
+            "version": "v3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/dom-crawler.git",
+                "reference": "981c8edb4538f88ba976ed44bdcaa683fce3d6c6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/981c8edb4538f88ba976ed44bdcaa683fce3d6c6",
+                "reference": "981c8edb4538f88ba976ed44bdcaa683fce3d6c6",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9",
+                "symfony/polyfill-mbstring": "~1.0"
+            },
+            "require-dev": {
+                "symfony/css-selector": "~2.8|~3.0"
+            },
+            "suggest": {
+                "symfony/css-selector": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\DomCrawler\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony DomCrawler Component",
+            "homepage": "https://symfony.com",
+            "time": "2016-02-28 16:24:34"
+        },
+        {
+            "name": "symfony/finder",
+            "version": "v3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/finder.git",
+                "reference": "623bda0abd9aa29e529c8e9c08b3b84171914723"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/623bda0abd9aa29e529c8e9c08b3b84171914723",
+                "reference": "623bda0abd9aa29e529c8e9c08b3b84171914723",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Finder\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Finder Component",
+            "homepage": "https://symfony.com",
+            "time": "2016-01-27 05:14:46"
+        }
+    ],
     "aliases": [
         {
             "alias": "1.6.0",
@@ -1103,8 +2618,7 @@
     ],
     "minimum-stability": "stable",
     "stability-flags": {
-        "erusev/parsedown": 20,
-        "rockettheme/toolbox": 20
+        "erusev/parsedown": 20
     },
     "prefer-stable": false,
     "prefer-lowest": false,
diff --git a/system/src/Grav/Common/Backup/ZipBackup.php b/system/src/Grav/Common/Backup/ZipBackup.php
index e69b4431f..ebafdacf3 100644
--- a/system/src/Grav/Common/Backup/ZipBackup.php
+++ b/system/src/Grav/Common/Backup/ZipBackup.php
@@ -2,7 +2,6 @@
 namespace Grav\Common\Backup;
 
 use Grav\Common\Grav;
-use Grav\Common\Filesystem\Folder;
 use Grav\Common\Inflector;
 
 /**
diff --git a/system/src/Grav/Common/Data/Validation.php b/system/src/Grav/Common/Data/Validation.php
index 03b57a472..270363ebc 100644
--- a/system/src/Grav/Common/Data/Validation.php
+++ b/system/src/Grav/Common/Data/Validation.php
@@ -2,7 +2,6 @@
 namespace Grav\Common\Data;
 
 use Grav\Common\Grav;
-use Grav\Common\GravTrait;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Parser;
 
diff --git a/system/src/Grav/Common/Data/ValidationException.php b/system/src/Grav/Common/Data/ValidationException.php
index 20011cb8e..3b3584dfa 100644
--- a/system/src/Grav/Common/Data/ValidationException.php
+++ b/system/src/Grav/Common/Data/ValidationException.php
@@ -27,4 +27,4 @@ class ValidationException extends \RuntimeException
     {
         return $this->messages;
     }
-}
\ No newline at end of file
+}
diff --git a/system/src/Grav/Common/GPM/AbstractCollection.php b/system/src/Grav/Common/GPM/AbstractCollection.php
index 1b0ac3e7d..25e4e4125 100644
--- a/system/src/Grav/Common/GPM/AbstractCollection.php
+++ b/system/src/Grav/Common/GPM/AbstractCollection.php
@@ -1,7 +1,6 @@
 <?php
 namespace Grav\Common\GPM;
 
-use Grav\Common\Grav;
 use Grav\Common\Iterator;
 
 abstract class AbstractCollection extends Iterator
diff --git a/system/src/Grav/Common/GPM/Common/AbstractPackageCollection.php b/system/src/Grav/Common/GPM/Common/AbstractPackageCollection.php
index e553c727e..839857db2 100644
--- a/system/src/Grav/Common/GPM/Common/AbstractPackageCollection.php
+++ b/system/src/Grav/Common/GPM/Common/AbstractPackageCollection.php
@@ -1,7 +1,6 @@
 <?php
 namespace Grav\Common\GPM\Common;
 
-use Grav\Common\Grav;
 use Grav\Common\Iterator;
 
 abstract class AbstractPackageCollection extends Iterator
diff --git a/system/src/Grav/Common/Markdown/ParsedownGravTrait.php b/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
index 3ba9aacda..6610e056b 100644
--- a/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
+++ b/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
@@ -2,8 +2,6 @@
 namespace Grav\Common\Markdown;
 
 use Grav\Common\Grav;
-use Grav\Common\Page\Page;
-use Grav\Common\Page\Pages;
 use Grav\Common\Uri;
 use RocketTheme\Toolbox\Event\Event;
 
diff --git a/system/src/Grav/Common/Page/Media.php b/system/src/Grav/Common/Page/Media.php
index 3a7373444..8c091bad4 100644
--- a/system/src/Grav/Common/Page/Media.php
+++ b/system/src/Grav/Common/Page/Media.php
@@ -2,7 +2,6 @@
 namespace Grav\Common\Page;
 
 use Grav\Common\Getters;
-use Grav\Common\Grav;
 use Grav\Common\Page\Medium\Medium;
 use Grav\Common\Page\Medium\MediumFactory;
 
diff --git a/system/src/Grav/Common/Page/Page.php b/system/src/Grav/Common/Page/Page.php
index 7ec8c293e..25e8d23ad 100644
--- a/system/src/Grav/Common/Page/Page.php
+++ b/system/src/Grav/Common/Page/Page.php
@@ -11,7 +11,6 @@ use Grav\Common\Language\Language;
 use Grav\Common\Markdown\Parsedown;
 use Grav\Common\Markdown\ParsedownExtra;
 use Grav\Common\Taxonomy;
-use Grav\Common\Twig;
 use Grav\Common\Uri;
 use Grav\Common\Utils;
 use RocketTheme\Toolbox\Event\Event;
diff --git a/system/src/Grav/Common/Twig/TwigExtension.php b/system/src/Grav/Common/Twig/TwigExtension.php
index a385bfe17..fb37f934c 100644
--- a/system/src/Grav/Common/Twig/TwigExtension.php
+++ b/system/src/Grav/Common/Twig/TwigExtension.php
@@ -25,9 +25,9 @@ class TwigExtension extends \Twig_Extension
      */
     public function __construct()
     {
-        $this->grav = Grav::instance();
+        $this->grav     = Grav::instance();
         $this->debugger = isset($this->grav['debugger']) ? $this->grav['debugger'] : null;
-        $this->config = $this->grav['config'];
+        $this->config   = $this->grav['config'];
     }
 
     /**
@@ -85,6 +85,7 @@ class TwigExtension extends \Twig_Extension
             new \Twig_SimpleFilter('ta', [$this, 'translateArray']),
             new \Twig_SimpleFilter('truncate', ['\Grav\Common\Utils', 'truncate']),
             new \Twig_SimpleFilter('truncate_html', ['\Grav\Common\Utils', 'truncateHTML']),
+            new \Twig_SimpleFilter('json_decode', [$this, 'jsonDecodeFilter']),
         ];
     }
 
@@ -111,8 +112,8 @@ class TwigExtension extends \Twig_Extension
             new \Twig_simpleFunction('t', [$this, 'translate']),
             new \Twig_simpleFunction('ta', [$this, 'translateArray']),
             new \Twig_SimpleFunction('url', [$this, 'urlFunc']),
-
-
+            new \Twig_SimpleFunction('json_decode', [$this, 'jsonDecodeFilter']),
+            new \Twig_SimpleFunction('get_cookie', [$this, 'getCookie']),
         ];
     }
 
@@ -139,7 +140,7 @@ class TwigExtension extends \Twig_Extension
      */
     public function safeEmailFilter($str)
     {
-        $email = '';
+        $email   = '';
         $str_len = strlen($str);
         for ($i = 0; $i < $str_len; $i++) {
             $email .= "&#" . ord($str[$i]) . ";";
@@ -374,11 +375,11 @@ class TwigExtension extends \Twig_Extension
         // is it future date or past date
         if ($now > $unix_date) {
             $difference = $now - $unix_date;
-            $tense = $this->grav['language']->translate('NICETIME.AGO', null, true);
+            $tense      = $this->grav['language']->translate('NICETIME.AGO', null, true);
 
         } else {
             $difference = $unix_date - $now;
-            $tense = $this->grav['language']->translate('NICETIME.FROM_NOW', null, true);
+            $tense      = $this->grav['language']->translate('NICETIME.FROM_NOW', null, true);
         }
 
         for ($j = 0; $difference >= $lengths[$j] && $j < count($lengths) - 1; $j++) {
@@ -411,7 +412,7 @@ class TwigExtension extends \Twig_Extension
      */
     public function absoluteUrlFilter($string)
     {
-        $url = $this->grav['uri']->base();
+        $url    = $this->grav['uri']->base();
         $string = preg_replace('/((?:href|src) *= *[\'"](?!(http|ftp)))/i', "$1$url", $string);
 
         return $string;
@@ -425,7 +426,7 @@ class TwigExtension extends \Twig_Extension
      */
     public function markdownFilter($string)
     {
-        $page = $this->grav['page'];
+        $page     = $this->grav['page'];
         $defaults = $this->config->get('system.pages.markdown');
 
         // Initialize the preferred variant of Parsedown
@@ -674,16 +675,16 @@ class TwigExtension extends \Twig_Extension
      * Workaround for twig associative array initialization
      * Returns a key => val array
      *
-     * @param string $key               key of item
-     * @param string $val               value of item
-     * @param string $current_array     optional array to add to
+     * @param string $key           key of item
+     * @param string $val           value of item
+     * @param string $current_array optional array to add to
      *
      * @return array
      */
     public function arrayKeyValueFunc($key, $val, $current_array = null)
     {
         if (empty($current_array)) {
-            return array( $key => $val );
+            return array($key => $val);
         } else {
             $current_array[$key] = $val;
             return $current_array;
@@ -757,14 +758,40 @@ class TwigExtension extends \Twig_Extension
         return $string;
     }
 
+    /**
+     * Decodes string from JSON.
+     *
+     * @param  string  $str
+     * @param  bool  $assoc
+     * @param int $depth
+     * @param int $options
+     * @return array
+     */
+    public function jsonDecodeFilter($str, $assoc = false, $depth = 512, $options = 0)
+    {
+        return json_decode(html_entity_decode($str), $assoc, $depth, $options);
+    }
+
+    /**
+     * Used to retrieve a cookie value
+     *
+     * @param string $key     The cookie name to retrieve
+     *
+     * @return mixed
+     */
+    public function getCookie($key)
+    {
+        return filter_input(INPUT_COOKIE, $key, FILTER_SANITIZE_STRING);
+    }
+
     /**
      * Twig wrapper for PHP's preg_replace method
      *
-     * @param mixed $subject    the content to perform the replacement on
-     * @param mixed $pattern    the regex pattern to use for matches
-     * @param mixed $replace    the replacement value either as a string or an array of replacements
-     * @param int   $limit      the maximum possible replacements for each pattern in each subject
-
+     * @param mixed $subject the content to perform the replacement on
+     * @param mixed $pattern the regex pattern to use for matches
+     * @param mixed $replace the replacement value either as a string or an array of replacements
+     * @param int   $limit   the maximum possible replacements for each pattern in each subject
+     *
      * @return mixed the resulting content
      */
     public function regexReplace($subject, $pattern, $replace, $limit = -1)
diff --git a/system/src/Grav/Common/Utils.php b/system/src/Grav/Common/Utils.php
index 9cd5b9b46..6f69480b6 100644
--- a/system/src/Grav/Common/Utils.php
+++ b/system/src/Grav/Common/Utils.php
@@ -241,6 +241,10 @@ abstract class Utils
             ignore_user_abort(false);
 
             // fix corrupted files
+            if (Grav::instance()['config']->get('system.cache.gzip')) {
+                // Flush gzhandler buffer if gzip setting was enabled.
+                ob_end_clean();
+            }
             ob_clean();
 
             if ($force_download) {