Impacted versions:
Latest Odoo Forum

Steps to reproduce:
Get a nofitication from the Odoo forum (by subscription or by a comment to your posting)

Current behavior:
The notification email contain the subject: "Re: False" and contains no link to the forum post.
Expected behavior:
The notification email contains the title of the forum post and a link to the forum post.
Video/Screenshot link (optional):

![selection_195](https://cloud.githubusercontent.com/assets/1814941/15383579/60b554b0-1d94-11e6-8b1b-875a11e3d82b.png)

return request.website.render("website_forum.edit_welcome_message", {'forum': forum})
    
    
    @http.route('/forum/get_url_title', type='json', auth="user", methods=['POST'], website=True)
    def get_url_title(self, **kwargs):
        try:
            arch = lxml.html.parse(urlopen(kwargs.get('url')))
            return arch.find(".//title").text
        except URLError:
            return False
    @http.route(['''/forum/<model("forum.forum"):forum>/question/<model("forum.post", "[('forum_id','=',forum[0]),('parent_id','=',False),('can_view', '=', True)]"):question>'''], type='http', auth="public", website=True)
    def question(self, forum, question, **post):