[FIX] rating: after posting a rate, don't redirect to backend

Some user might be logged but not have the right to access issue or task.
Plus it does not make any sense to redirect to backend after rating a task or an issue.

OPW: 748579

addons/rating/controllers/main.py

@@ -34,9 +34,6 @@ class Rating(http.Controller):
             return request.not_found()
         record_sudo = request.env[rating.res_model].sudo().browse(rating.res_id)
         record_sudo.rating_apply(rate, token=token, feedback=kwargs.get('feedback'))
-        # redirect to the form view if logged person
-        if request.session.uid:
-            return werkzeug.utils.redirect('/web#model=%s&id=%s&view_type=form' % (record_sudo._name, record_sudo.id))
         return request.render('rating.rating_external_page_view', {
             'web_base_url': request.env['ir.config_parameter'].sudo().get_param('web.base.url'),
             'rating': rating,