Add checkbox to archive prompt to control auto-deactivation

[orenyk]

Based on @esoterik's comment while reviewing the PR for #1384, we should add a checkbox to the prompt for an archival reason to determine whether or not the equipment should be automatically deactivated. This will require rewriting the current use of the JS prompt method with something like a jQuery UI dialog (e.g. see here. One thing to note is that the checkbox should default to the value set in the global setting and that it should only appear if the reservation has been checked out.