Updated the CMS pagination component.

Harmonized count type to NATURAL_64 for recent_nodes (more to do later).
Fix get is active code.

modules/node/persistence/cms_node_storage_i.e

@@ -43,6 +43,8 @@ feature {NONE} -- Implementation
 
 	extended_store (a_node: CMS_NODE)
 			-- Store extended data from `a_node'.
+		require
+			not error_handler.has_error
 		do
 			if attached node_storage_extension (a_node) as ext then
 				ext.store_node (a_node)
@@ -51,16 +53,17 @@ feature {NONE} -- Implementation
 
 	extended_load (a_node: CMS_NODE)
 			-- Load extended data into `a_node'.
+		require
+			not error_handler.has_error
 		do
 			if attached node_storage_extension (a_node) as ext then
 				ext.load_node (a_node)
 			end
 		end
 
-
 feature -- Access		
 
-	nodes_count: INTEGER_64
+	nodes_count: NATURAL_64
 			-- Count of nodes.
 		deferred
 		end