- store.getNode() no longer adds new node to the list
- instead, store.createNode() can be used to create an empty new node
- view/node.js now now transfer a local copy of the node object it wants to
modify, rather then modifying the real object from store.list. If the
change is accepted by server, the server will send the new values for the
changed object anyway.
Previously, if the user visited the node page for a nonexistent node but
didn't make any changes, the list view would always throw an exception
because an incomplete node object was contained in the list.