[Planner] ordering of custom task properties

[John Marshall <John Marshall ec gc ca>]

Hi,

When I add custom task properties, it seems that
the order that they show up in in the tasks display
is different than the order I entered them in. I
have not figured out the order that 0.11 uses,
but it seems that 0.12 puts them in reverse
alphabetical order.

What ordering method is used? Can I enforce my
own order? If yes, how?

Thanks,
John