Removed default handler for WSF_ROUTER

Added 	WSF_ROUTE to replace a TUPLE [H, C]
	WSF_ROUTER.route (req): detachable WSF_ROUTE
	WSF_ROUTER.execute_route (a_route, req, res)
	To help usage of Routers
Remove WSF_HANDLER_CONTEXT obsolete features.
Added comments

library/server/wsf/router/uri/default/wsf_uri_router.e

@@ -1,6 +1,7 @@
 note
-	description: "Summary description for {DEFAULT_REQUEST_URI_ROUTER}."
-	author: ""
+	description: "[
+					Default router based on URI map
+				]"
 	date: "$Date$"
 	revision: "$Revision$"
 

library/server/wsf/router/uri/default/wsf_uri_routing_handler.e

@@ -1,6 +1,8 @@
 note
-	description: "Summary description for {DEFAULT_REQUEST_URI_ROUTING_HANDLER}."
-	author: ""
+	description: "[
+						WSF_URI_ROUTING_HANDLER is a default descendant of WSF_URI_ROUTING_HANDLER_I
+						for WSF_URI_ROUTER
+				]"
 	date: "$Date$"
 	revision: "$Revision$"