I should be able to initialize a Date Property to the date when this Thing was created

(User Story, Closed -> Fixed, Priority: Critical, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284oe not found, )

Date and Time, Properties

Summary: This is a pretty common use case -- we often want a field that initializes to today, where "today" is the date when this Thing is created

Note that the problem is that, currently, we initialize the date to whatever value the model has. What we care about that, is the date of the instance.

After a fair amount of thinking, I don't see a particularly great general feature here, so I'm implementing it with a new Initialize When Thing Created meta-flag on Date Properties. This now shows up by default when you create or edit a Date or DateTime; if set, it initializes the Date as specified.