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/apache_bits.inc.php

@@ -0,0 +1,25 @@
+<?php
+
+$scale_min = 0;
+
+require 'includes/html/graphs/common.inc.php';
+
+$apache_rrd = rrd_name($device['hostname'], array('app', 'apache', $app['app_id']));
+
+if (rrdtool_check_rrd_exists($apache_rrd)) {
+    $rrd_filename = $apache_rrd;
+}
+
+$ds = 'kbyte';
+
+$colour_area = 'CDEB8B';
+$colour_line = '006600';
+
+$colour_area_max = 'FFEE99';
+
+$graph_max  = 1;
+$multiplier = 8;
+
+$unit_text = 'Kbps';
+
+require 'includes/html/graphs/generic_simplex.inc.php';