Security fix: unauthorized access (#10091)

* Security fix: unauthorized access
Affects nginx users:
Moved php files outside of public html directory (Apache was protected by .htaccess)

Affects all users:
Some files did not check for authentication and could disclose some info.
Better checks before including files from user input

* git mv html/includes/ includes/html
git mv html/pages/ includes/html/

includes/html/list/devices_groups.inc.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * devices_groups.inc.php
+ *
+ * List devices and groups in one
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2018 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+list($devices, $d_more) = include 'devices.inc.php';
+list($groups, $g_more) = include 'groups.inc.php';
+
+$groups = array_map(function ($group) {
+    $group['id'] = 'g' . $group['id'];
+    return $group;
+}, $groups);
+
+$data = [
+    ['text' => 'Devices', 'children' => $devices],
+    ['text' => 'Groups', 'children' => $groups]
+];
+
+return [$data, $d_more || $g_more];