0.8dev: Moved !JavaScript code that adds the duplicate ticket ID from `bh_ticket.html` to `bh_ticket_actions.html`.

This will allow the functionality to be reused in the batch modification form.


git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1570440 13f79535-47bb-0310-9956-ffa450edef68