[MIGRATED] website_forum: migrated website_forum into new api + solved s...

...ome bugs

[IMP] website_forum: removed unnecessary imports
[IMP] website_forum: improved badges access for anonymous user
[IMP] wesite_forum: bug solved for ckeditor
I would remove all karma_XXX fields. Use directly self.forum_id.karma_XXX in the can_YYY definition.