Update support for 'creation of collection nodes' based on latest XEP-60

Description

Collection nodes are now specified in the completed data form and no longer as an attribute of the create element. Update our implementation. BTW, we need to update a few other things (to figure out) to be 1.9 compliant.

Environment

None
Fixed

Assignee

Gaston Dombiak

Reporter

Gaston Dombiak