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/application/smart_id194.inc.php

@@ -0,0 +1,9 @@
+<?php
+$unit_text     = 'Temp (C)';
+$unitlen       = 10;
+$bigdescrlen   = 15;
+$smalldescrlen = 15;
+
+$rrdVar='id194';
+
+require 'smart-common.inc.php';