MDL-62800 tool_policy: Merge the policy tool to 3.4

The following changes has been done from the original repo:
- Remove README.md, LICENSE.md and .travis.yml
- Review the version.php content, to look like a standard plugin
- Adapt jquery-eu-cookie-law-popup.js and readme_moodle.txt to remove the
eslint-ignore

.eslintignore

@@ -3,6 +3,7 @@
 */**/build/
 node_modules/
 vendor/
+admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
 admin/tool/usertours/amd/src/tour.js
 admin/tool/usertours/amd/src/popper.js
 auth/cas/CAS/

.stylelintignore

@@ -4,6 +4,7 @@ theme/clean/style/custom.css
 theme/more/style/custom.css
 node_modules/
 vendor/
+admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
 admin/tool/usertours/amd/src/tour.js
 admin/tool/usertours/amd/src/popper.js
 auth/cas/CAS/

admin/tool/policy/accept.php

@@ -0,0 +1,72 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Accept or revoke policies on behalf of users (non-JS version)
+ *
+ * @package     tool_policy
+ * @copyright   2018 Marina Glancy
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require(__DIR__.'/../../../config.php');
+require_once($CFG->dirroot.'/user/editlib.php');
+
+$userids = optional_param_array('userids', null, PARAM_INT);
+$versionids = optional_param_array('versionids', null, PARAM_INT);
+$returnurl = optional_param('returnurl', null, PARAM_LOCALURL);
+$action = optional_param('action', null, PARAM_ALPHA);
+
+require_login();
+if (isguestuser()) {
+    print_error('noguest');
+}
+$context = context_system::instance();
+
+$PAGE->set_context($context);
+$PAGE->set_url(new moodle_url('/admin/tool/policy/accept.php'));
+
+if ($returnurl) {
+    $returnurl = new moodle_url($returnurl);
+} else if (count($userids) == 1) {
+    $userid = reset($userids);
+    $returnurl = new moodle_url('/admin/tool/policy/user.php', ['userid' => $userid]);
+} else {
+    $returnurl = new moodle_url('/admin/tool/policy/acceptances.php');
+}
+// Initialise the form, this will also validate users, versions and check permission to accept policies.
+$form = new \tool_policy\form\accept_policy(null,
+    ['versionids' => $versionids, 'userids' => $userids, 'showbuttons' => true, 'action' => $action]);
+$form->set_data(['returnurl' => $returnurl]);
+
+if ($form->is_cancelled()) {
+    redirect($returnurl);
+} else if ($form->get_data()) {
+    $form->process();
+    redirect($returnurl);
+}
+
+if ($action == 'revoke') {
+    $title = get_string('revokedetails', 'tool_policy');
+} else {
+    $title = get_string('consentdetails', 'tool_policy');
+}
+
+$output = $PAGE->get_renderer('tool_policy');
+echo $output->header();
+echo $output->heading($title);
+$form->display();
+echo $output->footer();

admin/tool/policy/acceptances.php

@@ -0,0 +1,65 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * View user acceptances to the policies
+ *
+ * @package     tool_policy
+ * @copyright   2018 Marina Glancy
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require(__DIR__.'/../../../config.php');
+require_once($CFG->libdir.'/adminlib.php');
+
+use core\output\notification;
+
+$policyid = optional_param('policyid', null, PARAM_INT);
+$versionid = optional_param('versionid', null, PARAM_INT);
+$versionid = optional_param('versionid', null, PARAM_INT);
+$filtersapplied = optional_param_array('unified-filters', [], PARAM_NOTAGS);
+
+$acceptancesfilter = new \tool_policy\output\acceptances_filter($policyid, $versionid, $filtersapplied);
+$policyid = $acceptancesfilter->get_policy_id_filter();
+$versionid = $acceptancesfilter->get_version_id_filter();
+
+// Set up the page as an admin page 'tool_policy_managedocs'.
+$urlparams = ($policyid ? ['policyid' => $policyid] : []) + ($versionid ? ['versionid' => $versionid] : []);
+admin_externalpage_setup('tool_policy_acceptances', '', $urlparams,
+    new moodle_url('/admin/tool/policy/acceptances.php'));
+
+$acceptancesfilter->validate_ids();
+$output = $PAGE->get_renderer('tool_policy');
+if ($acceptancesfilter->get_versions()) {
+    $acceptances = new \tool_policy\acceptances_table('tool_policy_user_acceptances', $acceptancesfilter, $output);
+    if ($acceptances->is_downloading()) {
+        $acceptances->download();
+    }
+}
+
+echo $output->header();
+echo $output->heading(get_string('useracceptances', 'tool_policy'));
+echo $output->render($acceptancesfilter);
+if (!empty($acceptances)) {
+    $acceptances->display();
+} else if ($acceptancesfilter->get_avaliable_policies()) {
+    // There are no non-guest policies.
+    echo $output->notification(get_string('selectpolicyandversion', 'tool_policy'), notification::NOTIFY_INFO);
+} else {
+    // There are no non-guest policies.
+    echo $output->notification(get_string('nopolicies', 'tool_policy'), notification::NOTIFY_INFO);
+}
+echo $output->footer();