cas 2.3.11

As per title, add a new permission "Contact ad owner". This new permission will be used within the canContact() permissions check functions in the Ad Entity and Item Entity which is used to determine whether the viewing user can contact the ad owner via the [Content seller] button on a given ad...

As per title, I've add a new permission "Purchase products (for sale ads)". This new permission will be used within the canPurchase() permissions check functions in the Ad Entity and Item Entity which is used to determine whether the viewing user can send a purchase request via the [Buy for...