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)

addons/website_forum/controllers/main.py
user = request.env.user
        if user.karma < forum.karma_moderate:
            raise werkzeug.exceptions.NotFound()
        Post = request.env['forum.post']
        domain = [('forum_id', '=', forum.id), ('state', '=', 'offensive'), ('active', '=', False)]
        offensive_posts_ids = Post.search(domain, order='write_date DESC')
        values = self._prepare_forum_values(forum=forum)
        values.update({
            'posts_ids': offensive_posts_ids,
            'queue_type': 'offensive',
        })
        return request.website.render("website_forum.moderation_queue", values)
    @http.route('/forum/<model("forum.forum"):forum>/post/<model("forum.post"):post>/validate', type='http', auth="user", website=True)
    def post_accept(self, forum, post):
        url = "/forum/%s/validation_queue" % (slug(forum))
        if post.state == 'flagged':
            url = "/forum/%s/flagged_queue" % (slug(forum))
        elif post.state == 'offensive':
            url = "/forum/%s/offensive_posts" % (slug(forum))
        post.validate()
        return werkzeug.utils.redirect(url)
    @http.route('/forum/<model("forum.forum"):forum>/post/<model("forum.post"):post>/refuse', type='http', auth="user", website=True)
    def post_refuse(self, forum, post):
        post.refuse()
        return self.question_ask_for_close(forum, post)
    @http.route('/forum/<model("forum.forum"):forum>/post/<model("forum.post"):post>/flag', type='json', auth="public", website=True)
    def post_flag(self, forum, post, **kwargs):