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)

user_answers = user_answer_ids[:post_display_limit]
        
        post_ids = [follower.res_id for follower in Followers.sudo().search([('res_model', '=', 'forum.post'), ('partner_id', '=', user.partner_id.id)])]
        followed = Post.search([('id', 'in', post_ids), ('forum_id', '=', forum.id), ('parent_id', '=', False)])
        
        favourite = Post.search([('favourite_ids', '=', user.id), ('forum_id', '=', forum.id), ('parent_id', '=', False)])
        
        data = Vote.read_group([('forum_id', '=', forum.id), ('recipient_id', '=', user.id)], ["vote"], groupby=["vote"])
        up_votes, down_votes = 0, 0
        for rec in data:
            if rec['vote'] == '1':
                up_votes = rec['vote_count']
            elif rec['vote'] == '-1':
                down_votes = rec['vote_count']
        
        vote_ids = Vote.search([('user_id', '=', user.id)])
        
        model, comment = Data.get_object_reference('mail', 'mt_comment')
        activities = Activity.search([('res_id', 'in', (user_question_ids + user_answer_ids).ids), ('model', '=', 'forum.post'), ('subtype_id', '!=', comment)],
                                     order='date DESC', limit=100)
        posts = {}
        for act in activities:
            posts[act.res_id] = True
        posts_ids = Post.search([('id', 'in', posts.keys())])
        posts = dict(map(lambda x: (x.id, (x.parent_id or x, x.parent_id and x or False)), posts_ids))
        
        if user == request.env.user:
            post['my_profile'] = True
        else:
            post['users'] = True