Allow the field to format the value used for ticket variable replacement
Add mockup of upgrade script for dynamic forms
Partially revert c086de8c16d8076c3960f8c20082c8c9eca9a191

Move validation back to class.topic.php to check if form associated with a
help topic has the required fields
Avoid double inserts if a new object is save()d twice
Remove unimplemented title and instructions override

On the form set definition page
Fix adding form sections to a form set at creation time

Forms weren't attached because the formset id isn't known yet because the
actual save is delayed. This is because the validation is deferred until
after the form sections are added.

We really need to move toward database transactions which would make this
much cleaner.