Reevaluate how we handle our paranoid object deletion

[krozett]

It's a nice idea, a gem that allows a simple undelete. However, we should reevaluate which objects we are using it on. Anything that uses acts_as_paranoid should offer an undelete function, otherwise why bother keeping it in the database?

For some objects like votes there is no compelling reason to keep those deleted objects around... IMO they should be deleted immediately. The gem allows us to call irreversible deletes on any object, so we should be using that. See https://github.com/ActsAsParanoid/acts_as_paranoid for how to do this.

For objects we do decide to keep around, it would be a good idea to have a time limit for undeletion, so we don't keep stale objects around forever. Run a cronjob or something like that.