Merge branch 'marcosgdf-bug-1790' into 3.6

ChangeLog

@@ -26,6 +26,7 @@ English Dolibarr ChangeLog
 - Fix: [ bug #1826 ] Supplier payment types are not translated into fourn/facture/paiement.php
 - Fix: [ bug #1830 ] Salaries payment only allows checking accounts
 - Fix: [ bug #1825 ] External agenda: hide/show checkbox doesn't work
+- Fix: [ bug #1790 ] Email form behaves in an unexpected way when pressing Enter key
 
 ***** ChangeLog for 3.6.2 compared to 3.6.1 *****
 - Fix: fix ErrorBadValueForParamNotAString error message in price customer multiprice.

htdocs/core/class/html.formmail.class.php

@@ -2,6 +2,7 @@
 /* Copyright (C) 2005-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2012 Regis Houssin		<regis.houssin@capnetworks.com>
  * Copyright (C) 2010-2011 Juanjo Menent		<jmenent@2byte.es>
+ * Copyright (C) 2015      Marcos García        <marcosgdf@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -254,6 +255,7 @@ class FormMail
         	if ($this->withform == 1)
         	{
         		$out.= '<form method="POST" name="mailform" enctype="multipart/form-data" action="'.$this->param["returnurl"].'">'."\n";
+				$out.= '<input style="display:none" type="submit" id="sendmail" name="sendmail">';
         		$out.= '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'" />';
         	}
         	foreach ($this->param as $key=>$value)