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/graphs/location/auth.inc.php

@@ -0,0 +1,9 @@
+<?php
+
+foreach (dbFetchRows('SELECT * FROM `devices`,`locations` WHERE location_id = ? && devices.location_id = locations.id', [$vars['id']]) as $device) {
+    if ($auth || device_permitted($device['device_id'])) {
+        $devices[] = $device;
+        $title     = $device['location'];
+        $auth      = true;
+    }
+}