Added screenshots link

README.md

@@ -5,4 +5,6 @@ Domotika home automation system controller daemon
 
 Donations are accepted in Bitcoins to 1GpZkuwMEXno7jW19oqoaraVoVS6VBCvX5
 
+[Screenshots of the webgui](http://www.unixmedia.it/en/interfaccia-utente)
+
 [![piwik tracking](https://webstats.unixmedia.it/piwik.php?idsite=2&rec=1&action_name=GitHubDomotikad "unixmedia.it")](http://www.unixmedia.it)

Web/htdocs/gui/panels/content/graph.php

 <? @include_once("../../includes/common.php"); ?>
 <? 
-$_SESSION[PANELS_CHARTS]=array();
+$_SESSION['PANELS_CHARTS']=array();
 if($panel && is_array($panel)) { 
    $days = getLastNDays(7, 'Y-m-d' );
    $daysql = getLastNDays(7, 'Y-m-d');
@@ -40,7 +40,7 @@ if($panel && is_array($panel)) {
 <?
    foreach($charts as $chart) {
       //print_r($chart);
-      $_SESSION[PANELS_CHARTS][$chart['name']."-".$panel['id']]=$chart;
+      $_SESSION['PANELS_CHARTS'][$chart['name']."-".$panel['id']]=$chart;
    ?>
       <div id="<?=$chart['name']."-".$panel['id']?>" style="height:200px;width:550px"><?=$chart['name']?></div>
    <?

Web/htdocs/gui/panels/include.php

 <? @include_once("../../includes/common.php"); ?>
 <?
+$showpanels=array();
 foreach($panels as $panel)
 {
    $paneldo=TRUE;