Update Confluence space trash to display date item was moved to trash

As a Confluence administrator we continually struggle with teams not understanding that deleting content just moves it to the space trash. This ends up wasting resources in our system as the trash just grows since no one is actively purging it. It would be helpful to have the field "date deleted/moved to trash" displayed in the space trash so we know how long content has been sitting there. This will give us a little more confidence that when the trash is purged we're not removing anything recently deleted that may need to be recovered.