Create interface for users to withdraw resource

[shaunagm]

Right now, users can submit resources and edit resources, but they can't delete or hide them. Right now there's a "withdrawn" status we could use for hiding, but only an admin can set it through the admin interface. This could be implemented by including the "status" field in "edit resource", but then you'd have to hide the "accepted" option so a user couldn't approve their own resource. It could also be implemented as an ajax call to a separate endpoint.

[sijanonly]

Hi @shaunagm I am working on it.