Ask about a document's origin

https://www.agileplannerapp.com/boards/173808/cards/5431

Implement prototype from [prototype-first-published](prototype-first-published): add compulsory radio choice with "this document is new" vs "previously published on another website", and if the latter then show a compulsory first_published date selector.

Is there a need to stop any other JavaScript from listening to the click? If not it would be better to just prevent the default behaviour rather than stopping the event bubbling to other things which might be listening to clicks.  

So `e.preventDefault();` rather than `return false;`