[website_forum][IMP]  user bio-graphy can be seen as tool-tip if userwho...

... answered to forum has 750 karma or more

- Task: https://www.odoo.com/web#id=9114&view_type=form&model=project.task&action=333&active_id=131
- Pad: https://pad.odoo.com/p/r.trbY07Uah3GhB7qB
Not necessary, we will directly use post.forum.karma.