diff --git a/main/gradebook/gradebook_view_result.php b/main/gradebook/gradebook_view_result.php
index 8cb081117a..dd66fa62b6 100755
--- a/main/gradebook/gradebook_view_result.php
+++ b/main/gradebook/gradebook_view_result.php
@@ -20,7 +20,10 @@ require_once api_get_path(LIBRARY_PATH).'ezpdf/class.ezpdf.php';
 require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/gradebook_functions.inc.php';
 
 api_block_anonymous_users();
-block_students();
+
+if(!api_is_drh()){
+    block_students();
+}
 
 $interbreadcrumb[]= array (
 	'url' => $_SESSION['gradebook_dest'],
diff --git a/main/gradebook/lib/fe/exportgradebook.php b/main/gradebook/lib/fe/exportgradebook.php
index f0d4caddb5..a97513daf9 100755
--- a/main/gradebook/lib/fe/exportgradebook.php
+++ b/main/gradebook/lib/fe/exportgradebook.php
@@ -80,6 +80,135 @@ a:active {text-decoration: none; font-weight : bold;  color : black;}
 	return $printdata;
 }
 
+
+/**
+ * This function get a content html for export inside a pdf file
+ * @param   array   table headers
+ * @param   array   table body
+ * @param   array   pdf headers
+ * @param   array   pdf footers
+ * @return void
+ */
+function export_pdf_attendance($headers_table, $data_table, $headers_pdf, $footers_pdf, $title_pdf) {
+    require_once api_get_path(LIBRARY_PATH).'mpdf/mpdf.php';
+
+    $mpdf = new mPDF('UTF-8', 'A4-L', '', '', 15, 10, 35, 20, 4, 2, 'L');
+    $mpdf->useOnlyCoreFonts = true;
+    $mpdf->mirrorMargins = 0;      // Use different Odd/Even headers and footers and mirror margins
+
+    if (is_array($headers_pdf)) {
+        // preparing headers pdf
+        $header = '<table width="100%"  cellspacing="1" cellpadding="1" border="0" class="strong">
+                                <tr>
+                                   <td ROWSPAN="3" style="text-align: left;" class="title"><img src="'.api_get_path(WEB_CSS_PATH).api_get_setting('stylesheets').'/images/header-logo.png"></td><td  colspan="3"><h1>'.$title_pdf.'</h1></td>
+                                <tr>
+                                    <td></td>
+                                    <td><strong>'.$headers_pdf[0][0].'</strong> </td><td> <strong>'.$headers_pdf[0][1].'</strong></td>
+                                    <td><strong>'.$headers_pdf[1][0].'</strong> </td><td> <strong>'.$headers_pdf[1][1].'</strong></td>
+
+                                </tr>
+                                <tr>
+                                    <td></td>
+                                    <td><strong>'.$headers_pdf[2][0].'</strong> </td><td> <strong>'.$headers_pdf[2][1].'</strong></td>
+                                    <td><strong>'.$headers_pdf[3][0].' </strong></td><td> <strong>'.$headers_pdf[3][1].'</strong></td>
+                                </tr>
+                                <tr>
+                                    <td></td><td></td>
+                                    <td><strong>'.$headers_pdf[4][0].'</strong></td><td> <strong>'.$headers_pdf[4][1].'</strong></td>
+                                    <td><strong>'.$headers_pdf[5][0].'</strong> </td><td> <strong>'.$headers_pdf[5][1].'</strong></td>
+                                </tr>
+                            </table>';
+    }
+
+    // preparing footer pdf
+    $footer = '<table width="100%" cellspacing="2" cellpadding="10" border="0">';
+    if (is_array($footers_pdf)) {
+        $footer .= '<tr>';
+        foreach ($footers_pdf as $foot_pdf) {
+            $footer .= '<td width="33%" style="text-align: center;">'.$foot_pdf.'</td>';
+        }
+        $footer .= '</tr>';
+    }
+    $footer .= '</table>';
+
+    $footer .= '<div align="right" style="font-weight: bold;">{PAGENO}/{nb}</div>';
+
+    // preparing content pdf
+    $css_file = api_get_path(TO_SYS, WEB_CSS_PATH).api_get_setting('stylesheets').'/print.css';
+    if (file_exists($css_file)) {
+        $css = @file_get_contents($css_file);
+    } else {
+        $css = '';
+    }
+
+    if(count($data_table) > 30)
+            $items_per_page = (count($data_table)/2);
+        else
+            $items_per_page = count($data_table);
+
+    $count_pages = ceil(count($data_table) / $items_per_page);
+    for ($x = 0; $x<$count_pages; $x++) {
+        $content_table .= '<table width="100%" border="1" style="border-collapse:collapse">';
+        // header table
+        $content_table .= '<tr>';
+        $i = 0;
+        if (is_array($headers_table)) {
+
+            foreach ($headers_table as $head_table) {
+                if (!empty($head_table[0])) {
+                    $width = (!empty($head_table[1])?$head_table[1].'%':'');
+                    $content_table .= '<th width="'.$width.'">'.$head_table[0].'</th>';
+                    $i++;
+                }
+            }
+        }
+        $content_table .= '</tr>';
+        // body table
+        if (is_array($data_table) && count($data_table) > 0) {
+            $offset = $x*$items_per_page;
+            $data_table = array_slice ($data_table, $offset, count($data_table));
+            $i = 1;
+            $item = $offset+1;
+            foreach ($data_table as $data) {
+                $content_table .= '<tr>';
+                $content_table .= '<td>'.($item<10?'0'.$item:$item).'</td>';
+                foreach ($data as  $key => $content) {
+                    if (isset($content)) {
+                        $key == 1 ? $align='align="left"':$align='align="center"';
+                        $content_table .= '<td '.$align.' style="padding:4px;" >'.$content.'</td>';
+                    }
+                }
+                $content_table .= '</tr>';
+                $i++;
+                $item++;
+                if ($i > $items_per_page) { break; }
+            }
+        } else {
+            $content_table .= '<tr colspan="'.$i.'"><td>'.get_lang('Empty').'</td></tr>';
+        }
+        $content_table .= '</table>';
+        if ($x < ($count_pages - 1)) { $content_table .= '<pagebreak />'; }
+    }
+
+    $html = $content_table;
+
+
+    // set attributes for pdf
+    $mpdf->SetHTMLHeader($header);
+    $mpdf->SetHTMLFooter($footer);
+    if (!empty($css)) {
+        $mpdf->WriteHTML($css, 1);
+        $mpdf->WriteHTML($html, 2);
+    } else {
+        $mpdf->WriteHTML($html);
+    }
+
+    $mpdf->Output(replace_dangerous_char($title_pdf.'.pdf'), 'D');
+    exit;
+
+}
+
+
 /**
  * This function get a content html for export inside a pdf file
  * @param	array	table headers
diff --git a/main/social/profile.php b/main/social/profile.php
index 7438a8031b..719bf0c519 100755
--- a/main/social/profile.php
+++ b/main/social/profile.php
@@ -16,6 +16,7 @@ require_once api_get_path(LIBRARY_PATH).'array.lib.php';
 require_once api_get_path(LIBRARY_PATH).'group_portal_manager.lib.php';
 
 $user_id = api_get_user_id();
+
 $show_full_profile = true;
 //social tab
 $this_section = SECTION_SOCIAL;
@@ -23,6 +24,9 @@ $this_section = SECTION_SOCIAL;
 //I'm your friend? I can see your profile?
 if (isset($_GET['u'])) {
 	$user_id 	= (int) Database::escape_string($_GET['u']);
+	if (api_is_anonymous($user_id, true)) {
+	    api_not_allowed();
+	}
 	// It's me!
 	if (api_get_user_id() != $user_id) {
 		$user_info	= UserManager::get_user_info_by_id($user_id);
@@ -61,8 +65,6 @@ require_once $libpath.'magpierss/rss_fetch.inc';
 
 api_block_anonymous_users();
 
-//jquery thickbox already called from main/inc/header.inc.php
-
 $htmlHeadXtra[] = '
 <script type="text/javascript">
 function toogle_course (element_html, course_code){