LDEV-2646: Several fixes for Planner access control: "Viewing" and "removing" is for whole nodes, not just templates. Node's owner can not remove it if there are subnodes he doesn't have permissions to remove.
LDEV-2642, LDEV-2646: Extend access control for Planner nodes. Add a node's owner field. Fix exporting/importing nodes. Upgrade XStream from 1.1 to 1.1.3.