diff --git a/htdocs/admin/mailing.php b/htdocs/admin/mailing.php
index a0f0f095019..da844ed9934 100644
--- a/htdocs/admin/mailing.php
+++ b/htdocs/admin/mailing.php
@@ -34,6 +34,8 @@ if (!$user->admin)
 
 $action = GETPOST('action','alpha');
 
+   
+
 /*
  * Actions
  */
@@ -45,13 +47,34 @@ if ($action == 'setvalue' && $user->admin)
 	$mailfrom = GETPOST('MAILING_EMAIL_FROM','alpha');
 	$mailerror = GETPOST('MAILING_EMAIL_ERRORSTO','alpha');
 	$checkread = GETPOST('value','alpha');
+	$checkread_key = GETPOST('MAILING_EMAIL_UNSUBSCRIBE_KEY','alpha');
 
 	$res=dolibarr_set_const($db, "MAILING_EMAIL_FROM",$mailfrom,'chaine',0,'',$conf->entity);
 	if (! $res > 0) $error++;
 	$res=dolibarr_set_const($db, "MAILING_EMAIL_ERRORSTO",$mailerror,'chaine',0,'',$conf->entity);
 	if (! $res > 0) $error++;
-	//$res=dolibarr_set_const($db, "MAILING_EMAIL_UNSUBSCRIBE",$checkread,'chaine',0,'',$conf->entity);
-	//if (! $res > 0) $error++;
+	if ($checkread=='on')
+	{
+		$res=dolibarr_set_const($db, "MAILING_EMAIL_UNSUBSCRIBE",1,'chaine',0,'',$conf->entity);
+		if (! $res > 0) $error++;
+	}
+	else if ($checkread=='off')
+	{
+		$res=dolibarr_set_const($db, "MAILING_EMAIL_UNSUBSCRIBE",0,'chaine',0,'',$conf->entity);
+		if (! $res > 0) $error++;
+	}
+	
+	//Create temporary encryption key if nedded
+	if (($conf->global->MAILING_EMAIL_UNSUBSCRIBE==1) && (empty($checkread_key)))
+	{
+		$chars = "abcdef(ghijklmnopqrstuvwxyz;!ABCDEFGH,IJKLMNOPQRSTUVWXYZ01_23456789";
+	    mt_srand(10000000*(double)microtime());
+	    for ($i = 0, $str = '', $lc = strlen($chars)-1; $i < 30; $i++) {
+	        $checkread_key .= $chars[mt_rand(0, $lc)];
+	    }
+	}
+	$res=dolibarr_set_const($db, "MAILING_EMAIL_UNSUBSCRIBE_KEY",$checkread_key,'chaine',0,'',$conf->entity);
+	if (! $res > 0) $error++;
 
  	if (! $error)
     {
@@ -104,24 +127,31 @@ print '<input size="32" type="text" name="MAILING_EMAIL_ERRORSTO" value="'.$conf
 if (!empty($conf->global->MAILING_EMAIL_ERRORSTO) && ! isValidEmail($conf->global->MAILING_EMAIL_ERRORSTO)) print ' '.img_warning($langs->trans("BadEMail"));
 print '</td></tr>';
 
-/*
+
 $var=!$var;
 print '<tr '.$bc[$var].'><td>';
 print $langs->trans("ActivateCheckRead").'</td><td>';
 if ($conf->global->MAILING_EMAIL_UNSUBSCRIBE==1)
 {
-	print '<a href="'.$_SERVER["PHP_SELF"].'?action=setvalue&value=0">';
+	print '<a href="'.$_SERVER["PHP_SELF"].'?action=setvalue&value=off">';
 	print img_picto($langs->trans("Enabled"),'switch_on');
 	print '</a>';
+	$readonly='';
 }
 else
 {
-	print '<a href="'.$_SERVER["PHP_SELF"].'?action=setvalue&value=1">';
+	print '<a href="'.$_SERVER["PHP_SELF"].'?action=setvalue&value=on">';
 	print img_picto($langs->trans("Disabled"),'switch_off');
 	print '</a>';
+	$readonly='disabled="disabled"';
 }
 print '</td></tr>';
-*/
+
+$var=!$var;
+print '<tr '.$bc[$var].'><td>';
+print $langs->trans("ActivateCheckReadKey").'</td><td>';
+print '<input size="32" type="text" name="MAILING_EMAIL_UNSUBSCRIBE_KEY" '.$readonly.' value="'.$conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY.'">';
+print '</td></tr>';
 
 
 print '<tr><td colspan="3" align="center"><input type="submit" class="button" value="'.$langs->trans("Modify").'"></td></tr>';
diff --git a/htdocs/comm/mailing/fiche.php b/htdocs/comm/mailing/fiche.php
index bcea8ad2a22..b2f875583f4 100644
--- a/htdocs/comm/mailing/fiche.php
+++ b/htdocs/comm/mailing/fiche.php
@@ -64,7 +64,7 @@ if ($conf->global->MAILING_EMAIL_UNSUBSCRIBE)
 			$substitutionarray,
 			array(
 					'__CHECK_READ__' => 'CheckMail',
-					'__UNSUSCRIBE__' => 'Unsuscribe'
+					'__UNSUSCRIBE__' => 'Unsubscribe'
 			)
 	);
 }
@@ -89,7 +89,7 @@ if ($conf->global->MAILING_EMAIL_UNSUBSCRIBE)
     		$substitutionarrayfortest,
     		array(
     				'__CHECK_READ__' => 'TESTCheckMail',
-    				'__UNSUSCRIBE__' => 'TESTCheckMail'
+    				'__UNSUSCRIBE__' => 'TESTUnsubscribe'
     		)
     );
 }
diff --git a/htdocs/core/modules/mailings/modules_mailings.php b/htdocs/core/modules/mailings/modules_mailings.php
index 75032bbab9e..53729e812e3 100644
--- a/htdocs/core/modules/mailings/modules_mailings.php
+++ b/htdocs/core/modules/mailings/modules_mailings.php
@@ -143,6 +143,8 @@ class MailingTargets    // This can't be abstract as it is used for some method
      */
     function add_to_target($mailing_id, $cibles)
     {
+    	global $conf;
+    	
     	$this->db->begin();
 
         // Insert emailing targest from array into database
@@ -162,7 +164,10 @@ class MailingTargets    // This can't be abstract as it is used for some method
             $sql .= "'".$this->db->escape($cibles[$i]['other'])."',";
             $sql .= "'".$this->db->escape($cibles[$i]['source_url'])."',";
             $sql .= "'".$this->db->escape($cibles[$i]['source_id'])."',";
-            $sql .= "'".$this->db->escape(md5($cibles[$i]['email'].';'.$cibles[$i]['name'].';'.$mailing_id))."',";
+            if ($conf->global->MAILING_EMAIL_UNSUBSCRIBE==1)
+            {
+            	$sql .= "'".$this->db->escape(md5($cibles[$i]['email'].';'.$cibles[$i]['name'].';'.$mailing_id.';'.$conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY))."',";
+            }
             $sql .= "'".$this->db->escape($cibles[$i]['source_type'])."')";
             $result=$this->db->query($sql);
             if ($result)
diff --git a/htdocs/langs/en_US/mails.lang b/htdocs/langs/en_US/mails.lang
index d5deed6ec64..a252859f964 100644
--- a/htdocs/langs/en_US/mails.lang
+++ b/htdocs/langs/en_US/mails.lang
@@ -77,6 +77,7 @@ CheckRead=Read Receipt
 YourMailUnsubcribeOK=The email <b>%s</b>  is correctly unsubcribe from mailing list
 MailtoEMail=Hyper link to email
 ActivateCheckRead=Activate Read receipt and unsubcribe tag
+ActivateCheckReadKey=Key use to encrypt URL use for Read Receipt and unsubcribe function
 
 # Libelle des modules de liste de destinataires mailing
 MailingModuleDescContactCompanies=Contacts of all third parties (customer, prospect, supplier, ...)
diff --git a/htdocs/langs/en_US/projects.lang b/htdocs/langs/en_US/projects.lang
index ead787d3d84..75082f8012c 100644
--- a/htdocs/langs/en_US/projects.lang
+++ b/htdocs/langs/en_US/projects.lang
@@ -85,6 +85,10 @@ TaskIsNotAffectedToYou=Task not allocated to you
 ErrorTimeSpentIsEmpty=Time spent is empty
 ThisWillAlsoRemoveTasks=This action will also delete all tasks of project (<b>%s</b> tasks at the moment) and all inputs of time spent.
 IfNeedToUseOhterObjectKeepEmpty=If some objects (invoice, order, ...), belonging to another third party, must be linked to the project to create, keep this empty to have the project being multi third parties.
+CloneProject=Clone project (associated task will be duplicated too)
+ConfirmCloneProject=Are you sure to clone this project ?
+ProjectReportDate=Change task date according project start date
+ErrorShiftTaskDate=Impossible to shift task date according to new project start date
 ##### Types de contacts #####
 TypeContact_project_internal_PROJECTLEADER=Project leader
 TypeContact_project_external_PROJECTLEADER=Project leader
diff --git a/htdocs/langs/fr_FR/mails.lang b/htdocs/langs/fr_FR/mails.lang
index 45b5dd24263..11b0aa4e0e1 100644
--- a/htdocs/langs/fr_FR/mails.lang
+++ b/htdocs/langs/fr_FR/mails.lang
@@ -77,6 +77,7 @@ CheckRead=Accusé de lecture
 YourMailUnsubcribeOK=L'adresse e-mail <b>%s</b> est bien désincrite de la liste.
 MailtoEMail=Ecrire a e-mail (lien)
 ActivateCheckRead=Activer les tags d'accusé de lecture et de désincription
+ActivateCheckReadKey=Clef de sécurité utilisée pour l'encryption des URL utilisées dans les fonctions d'accusé de lecture et de désincription
 
 # Libelle des modules de liste de destinataires mailing
 MailingModuleDescContactCompanies=Contacts de tiers (prospects, clients, fournisseurs...)
diff --git a/htdocs/langs/fr_FR/projects.lang b/htdocs/langs/fr_FR/projects.lang
index 6722ac6bb1d..0c3a21e4cdb 100644
--- a/htdocs/langs/fr_FR/projects.lang
+++ b/htdocs/langs/fr_FR/projects.lang
@@ -85,6 +85,10 @@ TaskIsNotAffectedToYou=Tâche qui ne vous est pas affectée
 ErrorTimeSpentIsEmpty=Le temps consommé n'est pas renseigné
 ThisWillAlsoRemoveTasks=Cette opération détruira également les tâches du projet (<b>%s</b> tâches actuellement) et le suivi des consommés.
 IfNeedToUseOhterObjectKeepEmpty=Si des objets (facture, commande, ...), appartenant à un autre tiers que celui choisi, doivent être liés au projet à créer, laisser vide afin de laisser le projet multi-tiers.
+CloneProject=Cloner le projet (les taches associées sont dupliquées également)
+ConfirmCloneProject=Êtes-vous sûr de vouloir cloner ce projet ?
+ProjectReportDate=Reporter les dates des taches en fonction de la date de départ.
+ErrorShiftTaskDate=Une erreur c'est produite dans le report des dates des taches.
 ##### Types de contacts #####
 TypeContact_project_internal_PROJECTLEADER=Chef de projet
 TypeContact_project_external_PROJECTLEADER=Chef de projet
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index 435c59d395d..d838f61b869 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -52,7 +52,7 @@ class Project extends CommonObject
     /**
      *  Constructor
      *
-     *  @param      DoliDB		$db      Database handler
+     *  @param      DoliDB		$DB      Database handler
      */
     function __construct($db)
     {
@@ -707,7 +707,7 @@ class Project extends CommonObject
     {
         global $user, $langs, $conf;
 
-        $now = dol_now();
+        $now = mktime();
 
         // Charge tableau des produits prodids
         $prodids = array();
diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index 6aefb92ec6c..b93598b600f 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -64,7 +64,7 @@ class Task extends CommonObject
     /**
      *  Constructor
      *
-     *  @param      DoliDB		$db      Database handler
+     *  @param      DoliDB		$DB      Database handler
      */
     function __construct($db)
     {
@@ -305,6 +305,7 @@ class Task extends CommonObject
      */
     function delete($user, $notrigger=0)
     {
+        
         global $conf, $langs;
 
         $error=0;
@@ -391,7 +392,7 @@ class Task extends CommonObject
 
             $this->db->commit();
 
-            return 1;
+	        return 1;
         }
     }
 
diff --git a/htdocs/projet/fiche.php b/htdocs/projet/fiche.php
index f84dca56cbe..8b0146a08f1 100644
--- a/htdocs/projet/fiche.php
+++ b/htdocs/projet/fiche.php
@@ -246,6 +246,7 @@ if ($action == 'builddoc' && $user->rights->projet->creer)
     }
 }
 
+
 if ($action == 'confirm_validate' && GETPOST('confirm') == 'yes')
 {
     $project = new Project($db);
@@ -315,6 +316,24 @@ if ($action == 'confirm_clone' && $user->rights->projet->creer && GETPOST('confi
     }
 }
 
+if ($action == 'confirm_clone' && $user->rights->projet->creer && GETPOST('confirm') == 'yes')
+{
+	$idtoclone=$id;
+	$project = new Project($db);
+    $project->fetch($idtoclone);
+    $result=$project->createFromClone($idtoclone,true,true,true,true);
+    if ($result <= 0)
+    {
+        $mesg='<div class="error">'.$project->error.'</div>';
+    }
+    else
+    {
+    	$id=$result;
+    	$action='edit';
+    	$comefromclone=true;
+    }
+}
+
 
 /*
  *	View
@@ -353,7 +372,7 @@ if ($action == 'create' && $user->rights->projet->creer)
     {
         require_once(DOL_DOCUMENT_ROOT ."/core/modules/project/".$conf->global->PROJECT_ADDON.".php");
         $modProject = new $obj;
-        $defaultref = $modProject->getNextValue($soc,$project);
+        $defaultref = $modProject->getNextValue($soc,$project);      
     }
 
     if (is_numeric($defaultref) && $defaultref <= 0) $defaultref='';
@@ -459,6 +478,7 @@ else
         $ret=$form->form_confirm($_SERVER["PHP_SELF"]."?id=".$project->id,$langs->trans("DeleteAProject"),$text,"confirm_delete",'','',1);
         if ($ret == 'html') print '<br>';
     }
+
     // Clone confirmation
     if ($action == 'clone')
     {
@@ -486,9 +506,7 @@ else
 
         // Customer
         print '<tr><td>'.$langs->trans("Company").'</td><td>';
-        $text=$form->select_company($project->societe->id,'socid','',1,1);
-        $texthelp=$langs->trans("IfNeedToUseOhterObjectKeepEmpty");
-        print $form->textwithtooltip($text.' '.img_help(),$texthelp,1);
+        print $form->select_company($project->societe->id,'socid','',1,1);
         print '</td></tr>';
 
         // Visibility
@@ -562,7 +580,7 @@ else
 
         // Date start
         print '<tr><td>'.$langs->trans("DateStart").'</td><td>';
-        print dol_print_date($project->date_start,'day');
+        print dol_print_date($project->date_start,'day'); 
         print '</td></tr>';
 
         // Date end
diff --git a/htdocs/projet/tasks/document.php b/htdocs/projet/tasks/document.php
index 8762f3cf271..ae5ce5a0b9c 100644
--- a/htdocs/projet/tasks/document.php
+++ b/htdocs/projet/tasks/document.php
@@ -125,7 +125,6 @@ if (! empty($project_ref) && ! empty($withproject))
 	}
 }
 
-// Find upload dir after retreive is task if necessary
 if ($id > 0 || ! empty($ref))
 {
 	if ($object->fetch($id,$ref) > 0)
@@ -141,7 +140,6 @@ if ($id > 0 || ! empty($ref))
 		dol_print_error($db);
 	}
 }
-
 /*
  * View
  */
@@ -283,4 +281,4 @@ else
 llxFooter();
 
 $db->close();
-?>
\ No newline at end of file
+?>