This is necessary to avoid confusion vs. closed state.

This allows fields to specify a visibility constraint that will be evaluated
in real time in the browser to automatically show and hide fields that
should be hidden based on values of other fields in the same form.

Validation is not performed on fields server-side if they are considered
invisible when submitted.

In some cases, a POST might be sent to the server and there be no draft. In
such a case, neither the draft nor the body of the page can be inspected for
images. Even worse, in some cases the previous images might be unlinked from
the article without being relinked. Therefore, the images will no longer be
linked to the page and will likely be purged from the system.

Show different messages and placeholder on ticket(s) deletions

Fix search backend to use the new statuses

Always clear staff's drafts on successful reply
Remove errant reload

Cleanup status change form
Add resolve to ticket ticket view
Use the new status table when checking for overdue

Unify use of modal dialog
Make popup dialog graggable

Empty the popup container and show loading spinner
on-load hide the spinner and show the content

Delete tickets for realz when set to 'deleted' status. This commit will be
partially reverted once data retention plugin is added.

Statuses with tickets cannot be deleted
Fix orm to class gracefully when joins are not inspected
Add create date to new statuses

Fix cases where first item added via addSubMenu got deleted.

Move ticket status change to unified backend.

Messages are extracted on post-action redirect.