A button when requesting a book (or other) to add free tag

Description of your request or bug report:

It’d be easier than having to write it out every single time. Quicker both on the user and administrative end.

It might also be nice to be able to add that free tag to already added books without having to go through the feedback button. Unless there’s a specific reason for it being this way currently.

Trello link: (leave in blank)