diff --git a/public/main/admin/configure_inscription.php b/public/main/admin/configure_inscription.php
deleted file mode 100644
index 87212fb2d3..0000000000
--- a/public/main/admin/configure_inscription.php
+++ /dev/null
@@ -1,359 +0,0 @@
-<?php
-
-/* For licensing terms, see /license.txt */
-
-use Chamilo\CoreBundle\Framework\Container;
-
-/**
- *	This script displays a form for registering new users.
- */
-$cidReset = true;
-require_once __DIR__.'/../inc/global.inc.php';
-
-api_protect_admin_script();
-
-// Load terms & conditions from the current lang
-if ('true' === api_get_setting('allow_terms_conditions')) {
-    $get = array_keys($_GET);
-    if (isset($get)) {
-        if (isset($get[0]) && 'legal' == $get[0]) {
-            $language = api_get_language_isocode();
-            $language = api_get_language_id($language);
-            $term_preview = LegalManager::get_last_condition($language);
-            if (!$term_preview) {
-                //look for the default language
-                $language = api_get_setting('platformLanguage');
-                $language = api_get_language_id($language);
-                $term_preview = LegalManager::get_last_condition($language);
-            }
-            $tool_name = get_lang('Terms and Conditions');
-            Display :: display_header('');
-            echo '<div class="actions-title">';
-            echo $tool_name;
-            echo '</div>';
-            if (!empty($term_preview['content'])) {
-                echo $term_preview['content'];
-            } else {
-                echo get_lang('Coming soon...');
-            }
-            Display :: display_footer();
-            exit;
-        }
-    }
-}
-
-$action = isset($_GET['action']) ? Security::remove_XSS($_GET['action']) : null;
-
-$interbreadcrumb[] = ['url' => 'index.php', 'name' => get_lang('Administration')];
-$tool_name = get_lang('Setting the registration page');
-if (!empty($action)) {
-    $interbreadcrumb[] = ['url' => 'configure_inscription.php', 'name' => get_lang('Setting the registration page')];
-    switch ($action) {
-        case 'edit_top':
-            $tool_name = get_lang('Edit Note');
-
-            break;
-    }
-}
-
-$lang = ''; //el for "Edit Language"
-if (!empty($_SESSION['user_language_choice'])) {
-    $lang = $_SESSION['user_language_choice'];
-} elseif (!empty($_SESSION['_user']['language'])) {
-    $lang = $_SESSION['_user']['language'];
-} else {
-    $lang = api_get_setting('platformLanguage');
-}
-
-// ----- Ensuring availability of main files in the corresponding language -----
-/*if (api_is_multiple_url_enabled()) {
-    $access_url_id = api_get_current_access_url_id();
-    if ($access_url_id != -1) {
-        $url_info = api_get_access_url($access_url_id);
-        $url = api_remove_trailing_slash(preg_replace('/https?:\/\//i', '', $url_info['url']));
-
-        $clean_url = api_replace_dangerous_char($url);
-        $clean_url = str_replace('/', '-', $clean_url);
-        $clean_url .= '/';
-
-        $homep = api_get_path(SYS_APP_PATH).'home/'; //homep for Home Path
-        $homep_new = api_get_path(SYS_APP_PATH).'home/'.$clean_url; //homep for Home Path added the url
-        $new_url_dir = api_get_path(SYS_APP_PATH).'home/'.$clean_url;
-        //we create the new dir for the new sites
-        if (!is_dir($new_url_dir)) {
-            mkdir($new_url_dir, api_get_permissions_for_new_directories());
-        }
-    }
-} else {
-    $homep_new = '';
-    $homep = api_get_path(SYS_APP_PATH).'home/'; //homep for Home Path
-}
-
-$topf = 'register_top'; //topf for Top File
-$ext = '.html'; //ext for HTML Extension - when used frequently, variables are
-$homef = [$topf];
-
-// If language-specific file does not exist, create it by copying default file
-foreach ($homef as $my_file) {
-    if (api_is_multiple_url_enabled()) {
-        if (!file_exists($homep_new.$my_file.'_'.$lang.$ext)) {
-            copy($homep.$my_file.$ext, $homep_new.$my_file.'_'.$lang.$ext);
-        }
-    } else {
-        if (!file_exists($homep.$my_file.'_'.$lang.$ext)) {
-            copy($homep.$my_file.$ext, $homep.$my_file.'_'.$lang.$ext);
-        }
-    }
-}
-
-if (!empty($homep_new)) {
-    $homep = $homep_new;
-}
-
-if (!empty($action)) {
-    if (isset($_POST['formSent'])) {
-        switch ($action) {
-            case 'edit_top':
-                // Filter
-                $home_top = trim(stripslashes($_POST['register_top']));
-                // Write
-                if (file_exists($homep.$topf.'_'.$lang.$ext)) {
-                    if (is_writable($homep.$topf.'_'.$lang.$ext)) {
-                        $fp = fopen($homep.$topf.'_'.$lang.$ext, 'w');
-                        fputs($fp, $home_top);
-                        fclose($fp);
-                    } else {
-                        $errorMsg = get_lang('Homepage-files are not writable!');
-                    }
-                } else {
-                    //File does not exist
-                    $fp = fopen($homep.$topf.'_'.$lang.$ext, 'w');
-                    fputs($fp, $home_top);
-                    fclose($fp);
-                }
-                break;
-        }
-        if (empty($errorMsg)) {
-            header('Location: '.api_get_self());
-            exit();
-        }
-    } else {
-        switch ($action) {
-            case 'edit_top':
-                // This request is only the preparation for the update of the home_top
-                $home_top = '';
-                if (is_file($homep.$topf.'_'.$lang.$ext) && is_readable($homep.$topf.'_'.$lang.$ext)) {
-                    $home_top = @(string) file_get_contents($homep.$topf.'_'.$lang.$ext);
-                } elseif (is_file($homep.$topf.$lang.$ext) && is_readable($homep.$topf.$lang.$ext)) {
-                    $home_top = @(string) file_get_contents($homep.$topf.$lang.$ext);
-                } else {
-                    $errorMsg = get_lang('Homepage files are not readable');
-                }
-                $home_top = api_to_system_encoding($home_top, api_detect_encoding(strip_tags($home_top)));
-                break;
-        }
-    }
-}*/
-
-$form = new FormValidator('registration');
-if ('true' === api_get_setting('allow_terms_conditions')) {
-    $display_all_form = !isset($_SESSION['update_term_and_condition']['user_id']);
-} else {
-    $display_all_form = true;
-}
-
-if ($display_all_form) {
-    if (api_is_western_name_order()) {
-        //	FIRST NAME and LAST NAME
-        $form->addElement('text', 'firstname', get_lang('First name'), ['size' => 40, 'disabled' => 'disabled']);
-        $form->addElement('text', 'lastname', get_lang('Last name'), ['size' => 40, 'disabled' => 'disabled']);
-    } else {
-        //	LAST NAME and FIRST NAME
-        $form->addElement('text', 'lastname', get_lang('Last name'), ['size' => 40, 'disabled' => 'disabled']);
-        $form->addElement('text', 'firstname', get_lang('First name'), ['size' => 40, 'disabled' => 'disabled']);
-    }
-    $form->applyFilter('firstname', 'trim');
-    $form->applyFilter('lastname', 'trim');
-    $form->addRule('lastname', get_lang('Required field'), 'required');
-    $form->addRule('firstname', get_lang('Required field'), 'required');
-
-    //	EMAIL
-    $form->addElement('text', 'email', get_lang('e-mail'), ['size' => 40, 'disabled' => 'disabled']);
-    if ('true' == api_get_setting('registration', 'email')) {
-        $form->addRule('email', get_lang('Required field'), 'required');
-    }
-    $form->addEmailRule('email');
-
-    //	USERNAME
-    $form->addElement('text', 'username', get_lang('Username'), ['size' => \Chamilo\CoreBundle\Entity\User::USERNAME_MAX_LENGTH, 'disabled' => 'disabled']);
-    $form->addRule('username', get_lang('Required field'), 'required');
-    $form->addRule('username', get_lang('Your login can only contain letters, numbers and _.-'), 'username');
-    $form->addRule('username', get_lang('This login is already in use'), 'username_available');
-    $form->addRule('username', sprintf(get_lang('The login needs to be maximum %s characters long'), (string) \Chamilo\CoreBundle\Entity\User::USERNAME_MAX_LENGTH), 'maxlength', \Chamilo\CoreBundle\Entity\User::USERNAME_MAX_LENGTH);
-
-    //	PASSWORD
-    $form->addElement('password', 'pass1', get_lang('Pass'), ['size' => 40, 'disabled' => 'disabled']);
-    $form->addElement('password', 'pass2', get_lang('Confirm password'), ['size' => 40, 'disabled' => 'disabled']);
-    $form->addRule('pass1', get_lang('Required field'), 'required');
-    $form->addRule('pass2', get_lang('Required field'), 'required');
-    $form->addRule(['pass1', 'pass2'], get_lang('You have typed two different passwords'), 'compare');
-    $form->addPasswordRule('pass1');
-
-    //	PHONE
-    $form->addElement('text', 'phone', get_lang('Phone'), ['size' => 40, 'disabled' => 'disabled']);
-    if ('true' == api_get_setting('registration', 'phone')) {
-        $form->addRule('phone', get_lang('Required field'), 'required');
-    }
-
-    //	LANGUAGE
-    if ('true' == api_get_setting('registration', 'language')) {
-        $form->addSelectLanguage(
-            'language',
-            get_lang('Language'),
-            '',
-            ['disabled' => 'disabled']
-        );
-    }
-
-    //	STUDENT/TEACHER
-    if ('false' != api_get_setting('allow_registration_as_teacher')) {
-        $form->addElement('radio', 'status', get_lang('Status'), get_lang('Student (follows courses)'), STUDENT, ['disabled' => 'disabled']);
-        $form->addElement('radio', 'status', null, get_lang('Teacher (creates courses)'), COURSEMANAGER, ['disabled' => 'disabled']);
-    }
-
-    //	EXTENDED FIELDS
-    if ('true' == api_get_setting('extended_profile') &&
-        'true' == api_get_setting('extendedprofile_registration', 'mycomptetences')
-    ) {
-        $form->addHtmlEditor('competences', get_lang('My competences'), false, false, ['ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130']);
-    }
-
-    if ('true' == api_get_setting('extended_profile') &&
-        'true' == api_get_setting('extendedprofile_registration', 'mydiplomas')
-    ) {
-        $form->addHtmlEditor('diplomas', get_lang('My diplomas'), false, false, ['ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130']);
-    }
-
-    if ('true' == api_get_setting('extended_profile') &&
-        'true' == api_get_setting('extendedprofile_registration', 'myteach')
-    ) {
-        $form->addHtmlEditor('teach', get_lang('What I am able to teach'), false, false, ['ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130']);
-    }
-
-    if ('true' == api_get_setting('extended_profile') &&
-        'true' == api_get_setting('extendedprofile_registration', 'mypersonalopenarea')
-    ) {
-        $form->addHtmlEditor('openarea', get_lang('My personal open area'), false, false, ['ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130']);
-    }
-
-    if ('true' == api_get_setting('extended_profile')) {
-        if ('true' == api_get_setting('extendedprofile_registrationrequired', 'mycomptetences')) {
-            $form->addRule('competences', get_lang('Required field'), 'required');
-        }
-        if ('true' == api_get_setting('extendedprofile_registrationrequired', 'mydiplomas')) {
-            $form->addRule('diplomas', get_lang('Required field'), 'required');
-        }
-        if ('true' == api_get_setting('extendedprofile_registrationrequired', 'myteach')) {
-            $form->addRule('teach', get_lang('Required field'), 'required');
-        }
-        if ('true' == api_get_setting('extendedprofile_registrationrequired', 'mypersonalopenarea')) {
-            $form->addRule('openarea', get_lang('Required field'), 'required');
-        }
-    }
-
-    $extraField = new ExtraField('user');
-    $extraField->addElements($form);
-}
-
-// Terms and conditions
-if ('true' == api_get_setting('allow_terms_conditions')) {
-    $language = api_get_language_isocode();
-    $language = api_get_language_id($language);
-    $term_preview = LegalManager::get_last_condition($language);
-
-    if (!$term_preview) {
-        //we load from the platform
-        $language = api_get_setting('platformLanguage');
-        $language = api_get_language_id($language);
-        $term_preview = LegalManager::get_last_condition($language);
-        //if is false we load from english
-        if (!$term_preview) {
-            $language = api_get_language_id('english'); //this must work
-            $term_preview = LegalManager::get_last_condition($language);
-        }
-    }
-
-    // Version and language //password
-    $form->addElement('hidden', 'legal_accept_type', $term_preview['version'].':'.$term_preview['language_id']);
-    $form->addElement('hidden', 'legal_info', $term_preview['id'].':'.$term_preview['language_id']);
-
-    if (1 == $term_preview['type']) {
-        $form->addElement(
-            'checkbox',
-            'legal_accept',
-            null,
-            get_lang('I have read and agree to the').'&nbsp;<a href="inscription.php?legal" target="_blank">'.get_lang('Terms and Conditions').'</a>'
-        );
-        $form->addRule('legal_accept', get_lang('Required field'), 'required');
-    } else {
-        if (!empty($term_preview['content'])) {
-            $preview = LegalManager::show_last_condition($term_preview);
-            $form->addElement('label', get_lang('Terms and Conditions'), $preview);
-        }
-    }
-}
-
-$form->addButtonSave(get_lang('Register'));
-
-$defaults['status'] = STUDENT;
-
-if (isset($_SESSION['user_language_choice']) && '' != $_SESSION['user_language_choice']) {
-    $defaults['language'] = $_SESSION['user_language_choice'];
-} else {
-    $defaults['language'] = api_get_setting('platformLanguage');
-}
-
-if (!empty($_GET['username'])) {
-    $defaults['username'] = Security::remove_XSS($_GET['username']);
-}
-
-if (!empty($_GET['email'])) {
-    $defaults['email'] = Security::remove_XSS($_GET['email']);
-}
-
-if (!empty($_GET['phone'])) {
-    $defaults['phone'] = Security::remove_XSS($_GET['phone']);
-}
-
-$form->setDefaults($defaults);
-
-$tpl = new Template();
-
-$content = Display::page_header($tool_name);
-
-// The following security condition has been removed, because it makes no sense here. See Bug #1846.
-//// Forbidden to self-register
-//if (api_get_setting('allow_registration') == 'false') {
-//    api_not_allowed();
-//}
-
-//Display::page_subheader2($tool_name);
-if ('approval' == api_get_setting('allow_registration')) {
-    $content .= Display::return_message(get_lang('Your account has to be approved'), 'normal');
-}
-
-$url = api_get_path(WEB_PUBLIC_PATH).'internal_page/edit/inscription';
-//Form of language
-//$content .= api_display_language_form();
-$content .= '&nbsp;&nbsp;<a href="'.api_get_self().'?action=edit_top">'.
-    Display::return_icon('edit.gif', get_lang('Edit')).'</a>
-    <a href="'.$url.'">'.get_lang('Edit notice').'</a>';
-
-$content .= $form->returnForm();
-
-//$page = Container::getPage('inscription');
-//$tpl->assign('page', $page);
-$tpl->assign('form', $content);
-
-$templateName = $tpl->get_template('auth/inscription_edit.html.twig');
-$tpl->display($templateName);
diff --git a/public/main/cron/lang/check_parse_lang.php b/public/main/cron/lang/check_parse_lang.php
deleted file mode 100644
index e17f1abe8a..0000000000
--- a/public/main/cron/lang/check_parse_lang.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-/**
- * Script to check that no language file has parse errors.
- */
-/**
- * Includes and declarations.
- */
-//die();
-require_once '../../inc/global.inc.php';
-$path = api_get_path(SYS_LANG_PATH).'english';
-ini_set('memory_limit', '128M');
-/**
- * Main code.
- */
-$terms = [];
-$list = SubLanguageManager::get_lang_folder_files_list($path);
-$langs = scandir(api_get_path(SYS_LANG_PATH));
-foreach ($langs as $lang) {
-    $dir = api_get_path(SYS_LANG_PATH).$lang;
-    if (is_dir($dir) && '.' != substr($lang, 0, 1) && !empty($lang)) {
-        echo "$lang...";
-        $ok = true;
-        foreach ($list as $entry) {
-            $file = $dir.'/'.$entry;
-            $out = [];
-            if (is_file($file)) {
-                //$terms = array_merge($terms,SubLanguageManager::get_all_language_variable_in_file($file,true));
-                @exec('php -l '.$file, $out);
-                if ('No' != substr($out[0], 0, 2)) {
-                    echo $out[0]."\n";
-                    $ok = false;
-                }
-            }
-        }
-        if ($ok) {
-            echo "OK\n";
-        }
-    }
-}
-echo "Done\n";
diff --git a/public/main/cron/lang/langstats.class.php b/public/main/cron/lang/langstats.class.php
deleted file mode 100644
index 8da3dcae27..0000000000
--- a/public/main/cron/lang/langstats.class.php
+++ /dev/null
@@ -1,215 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-
-/**
- * This class takes the creation and querying of an SQLite DB in charge. The
- * goal of this DB is to get stats on the usage of language vars for a common
- * user.
- */
-
-/**
- * This class takes the creation and querying of an SQLite DB in charge. The
- * goal of this DB is to get stats on the usage of language vars for a common
- * user. This class requires the SQLite extension of PHP to be installed. The
- * check for the availability of sqlite_open() should be made before calling
- * the constructor (preferably).
- */
-class langstats
-{
-    public $db; //database connector
-    public $error; //stored errors
-    public $db_type = 'sqlite';
-
-    public function __construct($file = '')
-    {
-        switch ($this->db_type) {
-            case 'sqlite':
-                if (!class_exists('SQLite3')) {
-                    $this->error = 'SQLiteNotAvailable';
-
-                    return false; //cannot use if sqlite not installed
-                }
-                if (empty($file)) {
-                    $file = api_get_path(SYS_ARCHIVE_PATH).'/langstasdb';
-                }
-                if (is_file($file) && is_writeable($file)) {
-                    $this->db = new SQLite3($file, SQLITE3_OPEN_READWRITE);
-                } else {
-                    try {
-                        $this->db = new SQLite3($file);
-                    } catch (Exception $e) {
-                        $this->error = 'DatabaseCreateError';
-                        error_log('Exception: '.$e->getMessage());
-
-                        return false;
-                    }
-                    $err = $this->db->exec(
-                        'CREATE TABLE lang_freq ('
-                        .' id integer PRIMARY KEY AUTOINCREMENT, ' //autoincrement in SQLITE
-                        .' term_name text, term_file text, term_count integer default 0)'
-                    );
-                    if (false === $err) {
-                        $this->error = 'CouldNotCreateTable';
-
-                        return false;
-                    }
-                    $err = $this->db->exec(
-                        'CREATE INDEX lang_freq_terms_idx ON lang_freq(term_name, term_file)'
-                    );
-                    if (false === $err) {
-                        $this->error = 'CouldNotCreateIndex';
-
-                        return false;
-                    }
-                    // Table and index created, move on.
-                }
-                break;
-            case 'mysql': //implementation not finished
-                if (!function_exists('mysql_connect')) {
-                    $this->error = 'SQLiteNotAvailable';
-
-                    return false; //cannot use if sqlite not installed
-                }
-                $err = Database::query('SELECT * FROM lang_freq');
-                if (false === $err) { //the database probably does not exist, create it
-                    $err = Database::query(
-                        'CREATE TABLE lang_freq ('
-                        .' id int PRIMARY KEY AUTO_INCREMENT, '
-                        .' term_name text, term_file text default \'\', term_count int default 0)'
-                    );
-                    if (false === $err) {
-                        $this->error = 'CouldNotCreateTable';
-
-                        return false;
-                    }
-                } // if no error, we assume the table exists
-                break;
-        }
-
-        return $this->db;
-    }
-
-    /**
-     * Add a count for a specific term.
-     *
-     * @param string The language term used
-     * @param string The file from which the language term came from
-     *
-     * @return mixed
-     */
-    public function add_use($term, $term_file = '')
-    {
-        $term = $this->db->escapeString($term);
-        $term_file = $this->db->escapeString($term_file);
-        $sql = "SELECT id, term_name, term_file, term_count FROM lang_freq WHERE term_name='$term' and term_file='$term_file'";
-        $ress = $this->db->query($sql);
-        if (false === $ress) {
-            $this->error = 'CouldNotQueryTermFromTable';
-
-            return false;
-        }
-        $i = 0;
-        while ($row = $ress->fetchArray(SQLITE3_BOTH)) {
-            $num = $row[3];
-            $num++;
-            $i++;
-            $res = $this->db->query(
-                'UPDATE lang_freq SET term_count = '.$num.' WHERE id = '.$row[0]
-            );
-            if (false === $res) {
-                $this->error = 'CouldNotUpdateTerm';
-
-                return false;
-            } else {
-                return $row[0];
-            }
-        }
-        if (0 == $i) {
-            //No term found in the table, register as new term
-            $resi = $this->db->query(
-                "INSERT INTO lang_freq(term_name, term_file, term_count) VALUES ('$term', '$term_file', 1)"
-            );
-            if (false === $resi) {
-                $this->error = 'CouldNotInsertRow';
-
-                return false;
-            } else {
-                return $this->db->lastInsertRowID();
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Function to get a list of the X most-requested terms.
-     *
-     * @param    int    Limit of terms to show
-     *
-     * @return array List of most requested terms
-     */
-    public function get_popular_terms($num = 1000)
-    {
-        $num = (int) $num;
-        $res = $this->db->query(
-            'SELECT * FROM lang_freq
-                  ORDER BY term_count DESC LIMIT '.$num
-        );
-        $list = [];
-        while ($row = $res->fetchArray()) {
-            $list[] = $row;
-        }
-
-        return $list;
-    }
-
-    /**
-     * Clear all records in lang_freq.
-     *
-     * @return resource true
-     */
-    public function clear_all()
-    {
-        $res = sqlite_query($this->db, 'DELETE FROM lang_freq WHERE 1=1');
-
-        return $res;
-    }
-
-    /**
-     * Returns an array of all the language variables with their corresponding
-     * file of origin. This function tolerates a certain rate of error due to
-     * the duplication of variables in language files.
-     *
-     * @return array variable => origin file
-     */
-    public function get_variables_origin()
-    {
-        $path = api_get_path(SYS_LANG_PATH).'english/';
-        $vars = [];
-        $priority = ['trad4all'];
-        foreach ($priority as $file) {
-            $list = SubLanguageManager::get_all_language_variable_in_file(
-                $path.$file.'.inc.php',
-                true
-            );
-            foreach ($list as $var => $trad) {
-                $vars[$var] = $file.'.inc.php';
-            }
-        }
-        $files = scandir($path);
-        foreach ($files as $file) {
-            if ('.' == substr($file, 0, 1) or in_array($file, $priority)) {
-                continue;
-            }
-            $list = SubLanguageManager::get_all_language_variable_in_file(
-                $path.$file,
-                true
-            );
-            foreach ($list as $var => $trad) {
-                $vars[$var] = $file;
-            }
-        }
-
-        return $vars;
-    }
-}
diff --git a/public/main/cron/lang/langstats.php b/public/main/cron/lang/langstats.php
deleted file mode 100644
index 118ed52bc9..0000000000
--- a/public/main/cron/lang/langstats.php
+++ /dev/null
@@ -1,84 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-/**
- * This script prints a list of most used language terms. The registration of
- * frequency for language variables is a very heavy operation.
- * To enable, add "$_configuration['language_measure_frequency' ] = 1;" at the
- * end of main/inc/conf/configuration.php. Remove when done.
- * Add ?output=1 to the URL to generate languag files in /tmp/lang/ with just
- * the number of terms you want.
- */
-/**
- * Requires.
- */
-exit();
-require_once '../../inc/global.inc.php';
-require_once 'langstats.class.php';
-/**
- * Init.
- */
-$terms_limit = 10000 + 50;
-$x_most_popular = 2000;
-$output = false;
-$ls = new langstats();
-if (false === $ls) {
-    exit($ls->error);
-}
-$list = $ls->get_popular_terms($x_most_popular);
-if (1 == $_GET['output']) {
-    $output = true;
-    $variables_origin = $ls->get_variables_origin();
-}
-/**
- * Display.
- */
-if (0 == count($list)) {
-    echo 'No terms loaded so far';
-}
-if (count($list) > 0) {
-    $i = 1;
-    $j = 1;
-    $k = 0;
-    $files = [];
-    $trans = [];
-    echo 'Number of records: '.count($list).'<br />';
-    echo '<table><tr><th>Index</th><th>Registration order</th><th>Term</th>'.(1 == $output ? '<th>Origin</th>' : '').'<th>Count</th></tr>';
-    foreach ($list as $elem) {
-        if ($k > $terms_limit) {
-            break;
-        }
-        $fixed_elem = $elem;
-        if ($output) {
-            if (empty($variables_origin[$elem['term_name']]) && !empty($variables_origin['lang'.$elem['term_name']])) {
-                $fixed_elem = ['id' => $elem['id'], 'term_name' => 'lang'.$elem['term_name'], 'term_count' => $elem['term_count']];
-            }
-            if (empty($variables_origin[$fixed_elem['term_name']])) {
-                continue;
-            }
-            $files[$variables_origin[$fixed_elem['term_name']]][] = $fixed_elem['term_name'];
-            $translation = get_lang($fixed_elem['term_name']);
-            $k += str_word_count($translation);
-            $trans[$fixed_elem['term_name']] = $translation;
-            $j++;
-        }
-        echo '<tr><td>', $i,
-      '</td><td>', $fixed_elem['id'],
-      '</td><td>', $fixed_elem['term_name'];
-        if ($output) {
-            echo '</td><td>'.$variables_origin[$fixed_elem['term_name']];
-        }
-        echo '</td><td>', $fixed_elem['term_count'], '</td></tr>';
-        $i++;
-    }
-    echo '</table>';
-    if ($output) {
-        @mkdir('/tmp/lang');
-        foreach ($files as $file => $terms) {
-            @touch('/tmp/lang/'.$file);
-            file_put_contents('/tmp/lang/'.$file, "<?php".PHP_EOL);
-            foreach ($terms as $term) {
-                file_put_contents('/tmp/lang/'.$file, '$'.$term.' = "'.str_replace('"', '\"', $trans[$term]).'";'.PHP_EOL, FILE_APPEND);
-            }
-        }
-    }
-}
diff --git a/public/main/cron/lang/langstats_file_builder.php b/public/main/cron/lang/langstats_file_builder.php
deleted file mode 100644
index c120873bb8..0000000000
--- a/public/main/cron/lang/langstats_file_builder.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-
-/**
- * This script generates a directory based on the English language variables
- * but only composed of the 10,000 (can be configured) most frequent words
- * used in Chamilo. This implies first using the langstats.php script, which
- * in turn implies configuring an additional variable in configuration.php
- * (see langstats.php for more info).
- * When running the language_builder, please make sure this parameter is
- * set to 0 in the configuration.php file, otherwise it will take *ages*.
- */
-require_once '../../inc/global.inc.php';
-require_once 'langstats.class.php';
-global $_configuration;
-$_configuration['language_measure_frequency'] = 0;
-$langstats = new langstats();
-$orig_lang = 'english';
-/**
- * Init.
- */
-$words_limit = 10000; //change this if you want more words
-$terms_limit = 3000; //change this if you think you'll need more terms
-$terms = $langstats->get_popular_terms($terms_limit);
-$words_counter = 0;
-$i = 0;
-$terms_in_limit = [];
-$lang_dir = api_get_path(SYS_LANG_PATH);
-$arch_dir = api_get_path(SYS_ARCHIVE_PATH);
-/**
- * Code run.
- */
-foreach ($terms as $row) {
-    if ($words_counter > 10000) {
-        break;
-    }
-    $words = str_word_count(get_lang($row['term_name'], null, $orig_lang));
-    $words_counter += $words;
-    $terms_in_limit[$row['term_name']] = $i;
-    //echo "Term <b>".$row['term_name']."</b> is <b>'".get_lang($row['term_name'],null,$orig_lang)."'</b> which means $words words<br /><br />\n";
-    //if ($words_counter%1000 >= 0) {
-    //echo "Reached $words_counter words at term $i (".$row['term_name']." used ".$row['term_count']." times)...<br />\n";
-    //}
-    $i++;
-}
-//echo $words_counter.'<br />';
-
-echo "Reached ".count($terms_in_limit)." terms for the $words_counter most-used words<br /><br />\n";
-
-echo "Scanning English files, trying to find these terms...<br />\n";
-if (!is_dir($arch_dir.'/langstats')) {
-    mkdir($arch_dir.'/langstats');
-    mkdir($arch_dir.'/langstats/'.$orig_lang);
-}
-$list_files = scandir($lang_dir.'/'.$orig_lang);
-$j = 1;
-$terms_found = [];
-$words_found = 0;
-$global_var = []; //keep the combination of all vars
-$terms_in_limit = array_flip($terms_in_limit);
-foreach ($list_files as $file) {
-    if ('.' == substr($file, 0, 1)) {
-        continue;
-    }
-    //echo "'".substr($file,0,-8)."',<br />"; //print in a PHP array format
-    $vars = file($lang_dir.'/'.$orig_lang.'/'.$file);
-    $local_var = [];
-    $file_string = '<?php'."\n";
-    foreach ($vars as $line) {
-        $var = [];
-        $res = preg_match('/^(\$\w*)/', $line, $var);
-        if ($res > 0) {
-            //echo $var[1]."<br />";
-
-            if (in_array(substr($var[1], 1), $terms_in_limit)) {
-                //echo "Var ".$var[1]." was in the limit<br />";
-                $local_var[$var[1]] = $line;
-                $file_string .= $line;
-                $terms_found[] = substr($var[1], 1); //e.g. store Tools
-                $words_found += str_word_count(get_lang($var[1], null, $orig_lang));
-            } elseif (in_array(substr($var[1], 5), $terms_in_limit)) {
-                //echo "Var ".$var[1]." was in the limit<br />";
-                $local_var[$var[1]] = $line;
-                $file_string .= $line;
-                $terms_found[] = substr($var[1], 5); //e.g. store langTools
-                $words_found += str_word_count(get_lang(substr($var[1], 5), null, $orig_lang));
-            } //else do not care
-        }
-    }
-    echo "Writing ".$arch_dir.'/langstats/'.$orig_lang.'/'.$file."<br />\n";
-    file_put_contents($arch_dir.'/langstats/'.$orig_lang.'/'.$file, $file_string);
-    $global_var += $local_var;
-}
-$terms_diff = count($global_var) - count($terms_in_limit);
-echo count(
-        $global_var
-    )." terms found in English files (summing up to $words_found words). Some terms ($terms_diff in this case) might have appeared in two different files<br />";
-/**
- * Display results.
- */
-echo "Difference between filtered and found in English:<br />";
-//print_r($terms_found);
-echo "<pre>".print_r(array_diff($terms_in_limit, $terms_found), 1)."</pre>";
-echo "#";
diff --git a/public/main/cron/lang/list_undefined_langvars.php b/public/main/cron/lang/list_undefined_langvars.php
deleted file mode 100644
index ef2882633f..0000000000
--- a/public/main/cron/lang/list_undefined_langvars.php
+++ /dev/null
@@ -1,81 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-/**
- * Cron script to list used, but undefined, language variables.
- */
-/**
- * Includes and declarations.
- */
-exit();
-require_once __DIR__.'/../../inc/global.inc.php';
-$path = api_get_path(SYS_LANG_PATH).'english';
-ini_set('memory_limit', '128M');
-/**
- * Main code.
- */
-$terms = [];
-$list = SubLanguageManager::get_lang_folder_files_list($path);
-foreach ($list as $entry) {
-    $file = $path.'/'.$entry;
-    if (is_file($file)) {
-        $terms = array_merge($terms, SubLanguageManager::get_all_language_variable_in_file($file, true));
-    }
-}
-// get only the array keys (the language variables defined in language files)
-$defined_terms = array_flip(array_keys($terms));
-$terms = null;
-$hidePlugins = !empty($_GET['hidePlugins']);
-
-// now get all terms found in all PHP files of Chamilo (this takes some time and memory)
-$undefined_terms = [];
-$l = strlen(api_get_path(SYS_PATH));
-$files = getAllPhpFiles(api_get_path(SYS_PATH));
-foreach ($files as $file) {
-    $isPlugin = preg_match('#/plugin/#', $file);
-    if ($isPlugin && $hidePlugins) {
-        continue;
-    }
-    //echo 'Analyzing '.$file."<br />";
-    $shortfile = substr($file, $l);
-    $lines = file($file);
-    foreach ($lines as $line) {
-        $myterms = [];
-        $res = preg_match_all('/get_lang\(\'(\\w*)\'\)/', $line, $myterms);
-        if ($res > 0) {
-            foreach ($myterms[1] as $term) {
-                if (!isset($defined_terms[$term]) && !isset($defined_terms['lang'.$term])) {
-                    $undefined_terms[$term] = $shortfile;
-                    //echo "Undefined: $term<br />";
-                }
-            }
-        }
-        $res = 0;
-        $res = preg_match_all('/\{[\'"](\\w*)[\'"]\|get_lang\}/', $line, $myterms);
-        if ($res > 0) {
-            foreach ($myterms[1] as $term) {
-                if (!isset($defined_terms[$term]) && !isset($defined_terms['lang'.$term])) {
-                    $undefined_terms[$term] = $shortfile;
-                    //echo "Undefined: $term<br />";
-                }
-            }
-        }
-    }
-    flush();
-}
-//$undefined_terms = array_flip($undefined_terms);
-if (count($undefined_terms) < 1) {
-    exit("No missing terms<br />\n");
-} else {
-    echo "The following terms were nowhere to be found: <br />\n<table>";
-}
-$i = 1;
-foreach ($undefined_terms as $term => $file) {
-    $isPlugin = 'plugin/' == substr($file, 0, 7);
-    echo "<tr><td>$i</td><td>$term</td><td>in $file";
-    if ($isPlugin) {
-        echo " <span style=\"color: #00ff00;\">(this one should be taken care of by the plugin's language files)</span>";
-    }
-    echo "</td></tr>\n";
-    $i++;
-}
-echo "</table>\n";
diff --git a/public/main/cron/lang/list_unused_langvars.php b/public/main/cron/lang/list_unused_langvars.php
deleted file mode 100644
index 5861a24616..0000000000
--- a/public/main/cron/lang/list_unused_langvars.php
+++ /dev/null
@@ -1,127 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-/**
- * Cron script to list unused, but defined, language variables.
- */
-/**
- * Includes and declarations.
- */
-exit();
-require_once __DIR__.'/../../inc/global.inc.php';
-$path = api_get_path(SYS_LANG_PATH).'english';
-ini_set('memory_limit', '128M');
-/**
- * Main code.
- */
-$terms = [];
-$list = SubLanguageManager::get_lang_folder_files_list($path);
-foreach ($list as $entry) {
-    $file = $path.'/'.$entry;
-    if (is_file($file)) {
-        $terms = array_merge($terms, SubLanguageManager::get_all_language_variable_in_file($file, true));
-    }
-}
-// get only the array keys (the language variables defined in language files)
-$defined_terms = array_flip(array_keys($terms));
-$terms = null;
-echo count($defined_terms)." terms were found in language files<br />";
-
-// now get all terms found in all PHP files of Chamilo (this takes some
-// time and memory)
-$usedTerms = [];
-$l = strlen(api_get_path(SYS_PATH));
-$files = getAllPhpFiles(api_get_path(SYS_PATH));
-$files[] = api_get_path(SYS_PATH).'main/install/data.sql';
-// Browse files
-foreach ($files as $file) {
-    //echo 'Analyzing '.$file."<br />";
-    $shortFile = substr($file, $l);
-    //echo 'Analyzing '.$shortFile."<br />";
-    $lines = file($file);
-    $isDataSQL = false;
-    if ('main/install/data.sql' === substr($file, -21)) {
-        $isDataSQL = true;
-    }
-    // Browse lines inside file $file
-    foreach ($lines as $line) {
-        if ($isDataSQL) {
-            // Check main/install/data.sql
-            // Should recognize stuff like
-            // INSERT INTO settings_current (variable, type, category, selected_value, title, comment) VALUES ('enable_profile_user_address_geolocalization', 'radio', 'User', 'false', 'EnableProfileUsersAddressGeolocalizationTitle', 'EnableProfileUsersAddressGeolocalizationComment');
-            // INSERT INTO settings_options (variable, value, display_text) VALUES ('enable_profile_user_address_geolocalization', 'true', 'Yes');
-            // ('show_teacher_data',NULL,'radio','Platform','true','ShowTeacherDataTitle','ShowTeacherDataComment',NULL,NULL, 1),
-            $res = 0;
-            $myTerms = [];
-            $res = preg_match_all('/\'(\w*)\',/', $line, $myTerms);
-            if ($res > 0) {
-                foreach ($myTerms[1] as $term) {
-                    if ('lang' == substr($term, 0, 4)) {
-                        $term = substr($term, 4);
-                    }
-                    $usedTerms[$term] = $shortFile;
-                }
-            }
-        } else {
-            $myTerms = [];
-            $res = preg_match_all('/get_lang\(\'(\\w*)\'\)/', $line, $myTerms);
-            if ($res > 0) {
-                foreach ($myTerms[1] as $term) {
-                    if ('lang' == substr($term, 0, 4)) {
-                        $term = substr($term, 4);
-                    }
-                    $usedTerms[$term] = $shortFile;
-                }
-            } else {
-                $res = 0;
-                $myTerms = [];
-                // Should catch:
-                // {{ 'CopyTextToClipboard' | get_lang }}
-                // {{ "HelloX" | get_lang | format(show_user_info.user_info.complete_name) }}
-                // {{ "StudentCourseProgressX" | get_lang | format(item.student_info.progress) }}
-                $res = preg_match_all('/\{\s*[\'"](\w*)[\'"]\s*\|\s*get_lang\s*(\|\s*\w*(\s*\([\w_\.,\s]*\))?\s*)?\}/', $line, $myTerms);
-                if ($res > 0) {
-                    foreach ($myTerms[1] as $term) {
-                        if ('lang' == substr($term, 0, 4)) {
-                            $term = substr($term, 4);
-                        }
-                        $usedTerms[$term] = $shortFile;
-                    }
-                }
-                // {{ display.panel('PersonalDataResponsibleOrganizationTitle' | get_lang , personal_data.responsible ) }}
-                // {{ display.panel('PersonalDataIntroductionTitle' | get_lang , 'PersonalDataIntroductionText' | get_lang) }}
-                $myTerms = [];
-                $res = preg_match_all('/\{\s*[\w\.]*\([\'"](\w*)[\'"]\s*\|\s*get_lang\s*(,\s*[\w_\.,\s\|\'"]*\s*)?\)\s*\}/', $line, $myTerms);
-                if ($res > 0) {
-                    foreach ($myTerms[1] as $term) {
-                        if ('lang' == substr($term, 0, 4)) {
-                            $term = substr($term, 4);
-                        }
-                        $usedTerms[$term] = $shortFile;
-                    }
-                }
-            }
-        }
-    }
-    flush();
-}
-
-// Compare defined terms VS used terms. Used terms should be smaller than
-// defined terms, and this should prove the concept that there are much
-// more variables than what we really use
-if (count($usedTerms) < 1) {
-    exit("No used terms<br />\n");
-} else {
-    echo "The following terms were defined but never used: <br />\n<table>";
-}
-$i = 1;
-foreach ($defined_terms as $term => $file) {
-    // remove "lang" prefix just in case
-    if ('lang' == substr($term, 0, 4)) {
-        $term = substr($term, 4);
-    }
-    if (!isset($usedTerms[$term])) {
-        echo "<tr><td>$i</td><td>$term</td></tr>\n";
-        $i++;
-    }
-}
-echo "</table>\n";
diff --git a/public/main/cron/lang/switch_files_to_gettext.php b/public/main/cron/lang/switch_files_to_gettext.php
deleted file mode 100644
index 0acd9ab42e..0000000000
--- a/public/main/cron/lang/switch_files_to_gettext.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-/**
- * Script to switch all PHP files in Chamilo to a more Gettext-like syntax.
- */
-/**
- * Includes and declarations.
- */
-exit();
-require_once __DIR__.'/../../inc/global.inc.php';
-$path = api_get_path(SYS_LANG_PATH).'english';
-ini_set('memory_limit', '128M');
-/**
- * Main code.
- */
-$terms = [];
-$list = SubLanguageManager::get_lang_folder_files_list($path);
-foreach ($list as $entry) {
-    $file = $path.'/'.$entry;
-    if (is_file($file)) {
-        $terms = array_merge($terms, SubLanguageManager::get_all_language_variable_in_file($file, true));
-    }
-}
-foreach ($terms as $index => $translation) {
-    $terms[$index] = trim(rtrim($translation, ';'), '"');
-}
-// get only the array keys (the language variables defined in language files)
-$defined_terms = array_flip(array_keys($terms));
-echo count($defined_terms)." terms were found in language files".PHP_EOL;
-
-// now get all terms found in all PHP files of Chamilo (this takes some
-// time and memory)
-$usedTerms = [];
-$l = strlen(api_get_path(SYS_PATH));
-$files = getAllPhpFiles(api_get_path(SYS_PATH));
-$rootLength = strlen(api_get_path(SYS_PATH));
-$countFiles = 0;
-$countReplaces = 0;
-// Browse files
-foreach ($files as $file) {
-    if ('vendor' === substr($file, $rootLength, 6) || 'web' === substr($file, $rootLength, 3)) {
-        continue;
-    }
-    //echo 'Analyzing '.$file.PHP_EOL;
-    $shortFile = substr($file, $l);
-    //echo 'Analyzing '.$shortFile.PHP_EOL;
-    $lines = file($file);
-    // Browse lines inside file $file
-    foreach ($lines as $line) {
-        $myTerms = [];
-        $res = preg_match_all('/get_lang\(([\'"](\\w*)[\'"])\)/m', $line, $myTerms);
-        if ($res > 0) {
-            foreach ($myTerms[2] as $term) {
-                echo "Found term $term - ".print_r($myTerms, 1).PHP_EOL;
-                if ('lang' == substr($term, 0, 4)) {
-                    $term = substr($term, 4);
-                }
-                if (!empty($terms[$term])) {
-                    $translation = $terms[$term];
-                    $quotedTerm = $myTerms[1][0];
-                    //echo "Would do sed -i \"s#$quotedTerm#'$translation'#g\" $file here\n";
-                    system("sed -i \"s#$term#'$translation'#g\" $file");
-                    $countReplaces++;
-                }
-            }
-        } else {
-            $res = 0;
-            $res = preg_match_all('/\{\s*([\'"](\\w*)[\'"])\s*\|get_lang\}/m', $line, $myTerms);
-            if ($res > 0) {
-                foreach ($myTerms[2] as $term) {
-                    echo "Found term $term".PHP_EOL;
-                    if ('lang' == substr($term, 0, 4)) {
-                        $term = substr($term, 4);
-                    }
-                    if (!empty($terms[$term])) {
-                        $translation = $terms[$term];
-                        $quotedTerm = $myTerms[1][0];
-                        //echo "Would do sed -i \"s#$quotedTerm#'$translation'#g\" $file here\n";
-                        system("sed -i \"s#$term#'$translation'#g\" $file");
-                        $countReplaces++;
-                    }
-                }
-            }
-        }
-    }
-    $countFiles++;
-    flush();
-}
-
-echo "Done analyzing $countFiles files, with $countReplaces replacements!\n";
diff --git a/public/main/inc/lib/usermanager.lib.php b/public/main/inc/lib/usermanager.lib.php
index 38026dcab6..3d8cf7c59e 100644
--- a/public/main/inc/lib/usermanager.lib.php
+++ b/public/main/inc/lib/usermanager.lib.php
@@ -3750,19 +3750,6 @@ class UserManager
          *  @todo we don't create tags with numbers
          *
          */
-        if (is_numeric($tag)) {
-            //the form is sending an id this means that the user select it from the list so it MUST exists
-            /* $new_tag_id = self::get_tag_id_from_id($tag,$field_id);
-              if ($new_tag_id !== false) {
-              $sql = "UPDATE $table_user_tag SET count = count + 1 WHERE id  = $new_tag_id";
-              $result = Database::query($sql);
-              $last_insert_id = $new_tag_id;
-              } else {
-              $sql = "INSERT INTO $table_user_tag (tag, field_id,count) VALUES ('$tag','$field_id', count + 1)";
-              $result = Database::query($sql);
-              $last_insert_id = Database::insert_id();
-              } */
-        }
 
         //this is a new tag
         if (0 == $tag_id) {
diff --git a/public/main/index.html b/public/main/index.html
deleted file mode 100644
index 74651721e8..0000000000
--- a/public/main/index.html
+++ /dev/null
@@ -1,8 +0,0 @@
-<html>
-<head>
-
-<meta http-equiv="refresh" content="0; url=../">
-</head>
-<body>
-</body>
-</html>
\ No newline at end of file
diff --git a/public/main/survey/survey.lib.php b/public/main/survey/survey.lib.php
index 4af239d4a9..f6dbb054be 100644
--- a/public/main/survey/survey.lib.php
+++ b/public/main/survey/survey.lib.php
@@ -360,15 +360,6 @@ class SurveyManager
                     api_get_course_int_id(),
                     api_get_session_id()
                 );
-
-                // Insert into item_property
-                /*api_item_property_update(
-                    api_get_course_info(),
-                    TOOL_SURVEY,
-                    $survey_id,
-                    'SurveyAdded',
-                    api_get_user_id()
-                );*/
             }
 
             if (1 == $values['survey_type'] && !empty($values['parent_id'])) {
@@ -611,17 +602,6 @@ class SurveyManager
             $params['invited'] = 0;
             $params['answered'] = 0;
             $new_survey_id = Database::insert($table_survey, $params);
-
-            if ($new_survey_id) {
-                // Insert into item_property
-                /*api_item_property_update(
-                    api_get_course_info(),
-                    TOOL_SURVEY,
-                    $new_survey_id,
-                    'SurveyAdded',
-                    api_get_user_id()
-                );*/
-            }
         } else {
             $new_survey_id = (int) $new_survey_id;
         }