Some small changes:
1. Add WebTask support for communicating back to the web interface and the Geni interface. Especially helpful for the case that a dataset needs admin approval. 2. Some changes related to above to make it easier to pass back the reason for nor approving. 3. Small semantic change to -C (always create) which I added for the Geni path a while back. It now means always create but respect the approval decision. In other words, if a dataset would need approval cause it is too big, create the dataset but mark it as needing approval and send mail. -C used to mean always create and approve. The new approach is a better fit for the Portal/Geni path.