Add Gallery and Offers to NFT Platform

DVF posting on behalf of Alpha Wiz:

Please introduce a gallery function where you can display the selected NFT, in a customized way. Your audience would be able to make an offer if they like your NFT, but they couldn't buy it outright, same way if you go to a Museum. If you want to create for instance an NFT airdrop this would be a very useful tool, and hundreds of other utility.

-- Alpha Wiz