Refactored add child feature, to have all the page specific code in CMS_PAGE_NODE_TYPE_WEBFORM_MANAGER (and not in the general node code).

Note that ideally PAGE could be a separated page node module (as it is for blog).
Added listing of children for each "page".

modules/node/cms_node_module.e

@@ -170,6 +170,8 @@ feature -- Access
 						Result.force ("trash own " + l_type_name)
 						Result.force ("restore own " + l_type_name)
 
+						Result.force ("view unpublished " + l_type_name)
+
 						Result.force ("view revisions own " + l_type_name)
 					end
 				end