Liking comments

[tsainez]

Users should be allowed to like or unlike comments.

In dens.py you might want to change get_likes() to something like...

# Returns the number of likes by post_id
def get_likes(id, type):
    if type == 'post':
        likes = get_db().execute('''
        SELECT COUNT(*) AS COUNT
        FROM post_like_assoc
        WHERE post_id = ?;
        ''', (id,)).fetchone()
        return likes['count']
    elif type == 'comment':
        # ... return the likes for a specific comment ...

as well as update every time get_likes is called elsewhere...