Update the logic on `user.get_quantity_per_membership_kind()`

The goal is to not double charge for the public channels.
Remove the KIND_SPONSOR it is not use in the Business model.
Disallow bot from Disallow: /*/*/search/ in robots.txt
Use raw_id_fields to display the Channel membership
Added link on banner ad
Merge branch 'botbot-2.0' into 2.0-clean