Include Offer ID in response tokens

[#1]

Currently the "option.id" in the response tokens is useless and cannot be mapped to anything. Please add in "offer.id" to response tokens. We do not want to get rid of the deprecated ttMETA plugin until offer.id works properly. Note you may also want to update the product documentation. "option.id" != "offer.id".

[#2]

Looks like this was implemented.