nodehierarchy 5.x-1.0

First stable version of node hierarchy. All new features will be added to the 5.x-2.x-dev and (future) 6.x-1.x-dev branches. The 5.x 1.x branch of nodehierarchy will only contain bug fixes and security releases.

Some basic features in this version include
* Ability to allow nodes to be children or parent by type
* A child list tab on parent nodes
* A basic site outliner with some ajax for speed of use
* Node access integration
* Workflow-ng integration (thanks to fago)
* Token integration for hierarchical urls
* One-click creation of menu items
* Views integration with displaying of a nodes children using a view