Add child page support.

- Add support to create a new node as a child of an existing node.
   - Update or add a parent for a given node.
Fix delete and trash behavior: when a node is not published only the
   - author or admin see it.

Fix Node and Page node Revisions.

modules/node/cms_node_module.e

@@ -205,6 +205,10 @@ feature -- Access: router
 			a_router.handle ("/node/{id}/delete", l_node_handler, a_router.methods_get_post)
 			a_router.handle ("/node/{id}/trash", l_node_handler, a_router.methods_get_post)
 
+				-- Add child
+			a_router.handle ("/node/{id}/add_child/{type}", l_node_handler, a_router.methods_get_post)
+
+
 			a_router.handle ("/node/{id}", l_node_handler, a_router.methods_get)
 				-- For now: no REST API handling... a_router.methods_get_put_delete + a_router.methods_get_post)