[IMP] email_template: allow extra builtins in rendering sandbox

bzr revid: odo@openerp.com-20140310102410-m66aa8164tekr51t

addons/email_template/email_template.py

@@ -63,6 +63,15 @@ try:
         'quote': quote,
         'urlencode': urlencode,
         'datetime': datetime,
+        'len': len,
+        'abs': abs,
+        'min': min,
+        'max': max,
+        'sum': sum,
+        'filter': filter,
+        'reduce': reduce,
+        'map': map,
+        'round': round,
 
         # dateutil.relativedelta is an old-style class and cannot be directly
         # instanciated wihtin a jinja2 expression, so a lambda "proxy" is