[IMP]Improved value in breadcrumb

bzr revid: pza@tinyerp.com-20131101073821-dugeqgue1a0o4ry5

addons/mail/mail_mail.py

@@ -68,6 +68,9 @@ class mail_mail(osv.Model):
         'state': 'outgoing',
     }
 
+    def name_get(self, cr, uid, ids, context=None):
+        return [(mail["id"], "%s" % (mail['subject'] or "New Mail")) for mail in self.read(cr, uid, ids, ['subject'], context=context)]
+
     def default_get(self, cr, uid, fields, context=None):
         # protection for `default_type` values leaking from menu action context (e.g. for invoices)
         # To remove when automatic context propagation is removed in web client