[IMP] http_routing: use converter defined in the module

Otherwise, the slug part of route can be used only when website is installed.

addons/http_routing/models/ir_http.py

@@ -178,6 +178,16 @@ class IrHttp(models.AbstractModel):
 
     rerouting_limit = 10
 
+    @classmethod
+    def _get_converters(cls):
+        """ Get the converters list for custom url pattern werkzeug need to
+            match Rule. This override adds the website ones.
+        """
+        return dict(
+            super(IrHttp, cls)._get_converters(),
+            model=ModelConverter,
+        )
+
     @classmethod
     def _get_languages(cls):
         return request.env['res.lang'].search([])

addons/portal/models/mail_message.py

@@ -13,7 +13,6 @@ class MailMessage(models.Model):
             'id', 'body', 'date', 'author_id', 'email_from',  # base message fields
             'message_type', 'subtype_id', 'subject',  # message specific
             'model', 'res_id', 'record_name',  # document related
-            'website_published',
         ])
 
     @api.multi