diff --git a/composer.json b/composer.json
index fedced978..39e14d053 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,6 @@
         "dapphp/securimage": "^3.6",
         "psr/log":"1.0.0",
         "monolog/monolog": "1.19.0",
-        "ezyang/htmlpurifier": "4.8.0",
         "geshi/geshi": "dev-master",
         "libchart/libchart": "1.4.0",
         "indeyets/pake": "1.99.*",
diff --git a/composer.lock b/composer.lock
index 4d594c15d..4d8cc5249 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +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"
     ],
-    "hash": "a1e42b4c6d3e8a5c67a43b9022973a66",
-    "content-hash": "9fed6081049070197591b4a9f96f5dcb",
+    "content-hash": "b1965af4146852b5ea1aba13a19df7b6",
     "packages": [
         {
             "name": "bshaffer/oauth2-server-php",
@@ -30,7 +29,7 @@
                     "OAuth2": "src/"
                 }
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -48,7 +47,7 @@
                 "oauth",
                 "oauth2"
             ],
-            "time": "2013-08-12 16:35:58"
+            "time": "2013-08-12T16:35:58+00:00"
         },
         {
             "name": "colosa/MichelangeloFE",
@@ -146,51 +145,7 @@
                 "captcha",
                 "security"
             ],
-            "time": "2016-12-04 17:45:57"
-        },
-        {
-            "name": "ezyang/htmlpurifier",
-            "version": "v4.8.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/ezyang/htmlpurifier.git",
-                "reference": "d0c392f77d2f2a3dcf7fcb79e2a1e2b8804e75b2"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/d0c392f77d2f2a3dcf7fcb79e2a1e2b8804e75b2",
-                "reference": "d0c392f77d2f2a3dcf7fcb79e2a1e2b8804e75b2",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.2"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-0": {
-                    "HTMLPurifier": "library/"
-                },
-                "files": [
-                    "library/HTMLPurifier.composer.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "LGPL"
-            ],
-            "authors": [
-                {
-                    "name": "Edward Z. Yang",
-                    "email": "admin@htmlpurifier.org",
-                    "homepage": "http://ezyang.com"
-                }
-            ],
-            "description": "Standards compliant HTML filter written in PHP",
-            "homepage": "http://htmlpurifier.org/",
-            "keywords": [
-                "html"
-            ],
-            "time": "2016-07-16 12:58:58"
+            "time": "2016-12-04T17:45:57+00:00"
         },
         {
             "name": "geshi/geshi",
@@ -264,7 +219,7 @@
                     "src/"
                 ]
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "Apache-2.0"
             ],
@@ -273,7 +228,7 @@
             "keywords": [
                 "google"
             ],
-            "time": "2015-10-16 22:11:08"
+            "time": "2015-10-16T22:11:08+00:00"
         },
         {
             "name": "indeyets/pake",
@@ -339,7 +294,7 @@
                 "build",
                 "task"
             ],
-            "time": "2013-11-04 08:29:46"
+            "time": "2013-11-04T08:29:46+00:00"
         },
         {
             "name": "libchart/libchart",
@@ -385,7 +340,7 @@
                 "line charts",
                 "pie charts"
             ],
-            "time": "2013-10-19 22:21:30"
+            "time": "2013-10-19T22:21:30+00:00"
         },
         {
             "name": "luracast/restler",
@@ -464,7 +419,7 @@
                 "rest",
                 "server"
             ],
-            "time": "2017-01-11 03:42:36"
+            "time": "2017-01-11T03:42:36+00:00"
         },
         {
             "name": "monolog/monolog",
@@ -542,7 +497,7 @@
                 "logging",
                 "psr-3"
             ],
-            "time": "2016-04-12 18:29:35"
+            "time": "2016-04-12T18:29:35+00:00"
         },
         {
             "name": "pear/archive_tar",
@@ -608,7 +563,7 @@
                 "archive",
                 "tar"
             ],
-            "time": "2017-06-11 17:28:11"
+            "time": "2017-06-11T17:28:11+00:00"
         },
         {
             "name": "pear/console_getopt",
@@ -655,7 +610,7 @@
                 }
             ],
             "description": "More info available on: http://pear.php.net/package/Console_Getopt",
-            "time": "2015-07-20 20:28:12"
+            "time": "2015-07-20T20:28:12+00:00"
         },
         {
             "name": "pear/pear-core-minimal",
@@ -699,7 +654,7 @@
                 }
             ],
             "description": "Minimal set of PEAR core files to be used as composer dependency",
-            "time": "2017-02-28 16:46:11"
+            "time": "2017-02-28T16:46:11+00:00"
         },
         {
             "name": "pear/pear_exception",
@@ -754,7 +709,7 @@
             "keywords": [
                 "exception"
             ],
-            "time": "2015-02-10 20:07:52"
+            "time": "2015-02-10T20:07:52+00:00"
         },
         {
             "name": "phpmailer/phpmailer",
@@ -831,7 +786,7 @@
                 }
             ],
             "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
-            "time": "2017-07-26 21:00:20"
+            "time": "2017-07-26T21:00:20+00:00"
         },
         {
             "name": "psr/log",
@@ -869,7 +824,7 @@
                 "psr",
                 "psr-3"
             ],
-            "time": "2012-12-21 11:40:51"
+            "time": "2012-12-21T11:40:51+00:00"
         },
         {
             "name": "tecnickcom/tcpdf",
@@ -931,7 +886,7 @@
                 "pdf417",
                 "qrcode"
             ],
-            "time": "2017-04-26 08:14:48"
+            "time": "2017-04-26T08:14:48+00:00"
         }
     ],
     "packages-dev": [
@@ -982,7 +937,7 @@
                     "Behat\\Behat": "src/"
                 }
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -1000,7 +955,7 @@
                 "Behat",
                 "Symfony2"
             ],
-            "time": "2013-06-06 10:46:48"
+            "time": "2013-06-06T10:46:48+00:00"
         },
         {
             "name": "behat/gherkin",
@@ -1041,7 +996,7 @@
                     "Behat\\Gherkin": "src/"
                 }
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -1061,7 +1016,7 @@
                 "Symfony2",
                 "parser"
             ],
-            "time": "2013-03-02 10:38:40"
+            "time": "2013-03-02T10:38:40+00:00"
         },
         {
             "name": "guzzle/guzzle",
@@ -1127,7 +1082,7 @@
                     "Guzzle": "src/"
                 }
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -1154,7 +1109,7 @@
                 "web service"
             ],
             "abandoned": "guzzlehttp/guzzle",
-            "time": "2013-01-28 00:07:40"
+            "time": "2013-01-28T00:07:40+00:00"
         },
         {
             "name": "symfony/config",
@@ -1210,7 +1165,7 @@
             ],
             "description": "Symfony Config Component",
             "homepage": "https://symfony.com",
-            "time": "2017-04-12 14:07:15"
+            "time": "2017-04-12T14:07:15+00:00"
         },
         {
             "name": "symfony/console",
@@ -1271,7 +1226,7 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2017-07-29 21:26:04"
+            "time": "2017-07-29T21:26:04+00:00"
         },
         {
             "name": "symfony/debug",
@@ -1328,7 +1283,7 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
-            "time": "2016-07-30 07:22:48"
+            "time": "2016-07-30T07:22:48+00:00"
         },
         {
             "name": "symfony/dependency-injection",
@@ -1391,7 +1346,7 @@
             ],
             "description": "Symfony DependencyInjection Component",
             "homepage": "https://symfony.com",
-            "time": "2017-07-28 15:21:22"
+            "time": "2017-07-28T15:21:22+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -1451,7 +1406,7 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2017-06-02 07:47:27"
+            "time": "2017-06-02T07:47:27+00:00"
         },
         {
             "name": "symfony/filesystem",
@@ -1500,7 +1455,7 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
-            "time": "2016-07-20 05:43:46"
+            "time": "2016-07-20T05:43:46+00:00"
         },
         {
             "name": "symfony/finder",
@@ -1534,7 +1489,7 @@
                     "/Tests/"
                 ]
             },
-            "notification-url": "http://packagist.org/downloads/",
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -1550,7 +1505,7 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2016-05-13 14:58:35"
+            "time": "2016-05-13T14:58:35+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
@@ -1609,7 +1564,7 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-06-09 14:24:12"
+            "time": "2017-06-09T14:24:12+00:00"
         },
         {
             "name": "symfony/translation",
@@ -1673,7 +1628,7 @@
             ],
             "description": "Symfony Translation Component",
             "homepage": "https://symfony.com",
-            "time": "2017-06-24 16:44:49"
+            "time": "2017-06-24T16:44:49+00:00"
         },
         {
             "name": "symfony/yaml",
@@ -1722,7 +1677,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2017-06-01 20:52:29"
+            "time": "2017-06-01T20:52:29+00:00"
         }
     ],
     "aliases": [],