Right now to support DocPad's standard template helpers we have to define them manually inside our DocPad configuration file, this is a huge area of pain to a lot of new users so we should probably handle that ourselves.
I'd imagine it would be pretty easy, but right now my focus is on other things. @toabi would you be interested in implementing this by any chance?
Original topic: https://groups.google.com/forum/#!topic/docpad/2LPvgtYTrc8