General : cleaning and optimizing CSS

General : responsive design
General : reload button now spins when you reload block
General : update jQuery plugin Knob to 1.2.11
General : optimizing security (config file esm.config.json is now in the conf/ folder with an htaccess)
CPU : retrieves correctly CPU frequency for Raspberry Pi
CPU : add CPU temperature (+ option to enable/disable)
System : little correction for getting distro name
Swap : fix if swap is disabled
Services status : adds protocol TCP or UDP for checking service status
Services status : new option to hide port number (see show_port in services section)

libs/memory.php

@@ -1,5 +1,5 @@
 <?php
-require 'Utils/Misc.class.php';
+require '../autoload.php';
 
 $free = 0;
 
@@ -22,7 +22,9 @@ if (!($total = shell_exec('grep MemTotal /proc/meminfo | awk \'{print $2}\'')))
 $used = $total - $free;
 
 // Percent used
-$percent_used = 100 - (round($free / $total * 100));
+$percent_used = 0;
+if ($total > 0)
+    $percent_used = 100 - (round($free / $total * 100));
 
 
 $datas = array(