Renamed "ext" folder as "contrib" folder and reorganized a little bit

Renamed any *_APPLICATION as *_SERVICE
   mainly because those components
   such as WSF_APPLICATION, renamed as WSF_SERVICE
   are not always the main application entry, and "service" describe them better
Minor implementation change in WSF_REQUEST
Cosmetics

library/server/wsf/tests/src/test_wsf_request.e

@@ -17,14 +17,14 @@ inherit
 			on_clean
 		end
 
-	WSF_APPLICATION
+	WSF_SERVICE
 		undefine
 			default_create
 		end
 
 feature {NONE} -- Events
 
-	web_app: detachable NINO_APPLICATION
+	web_app: detachable NINO_SERVICE
 
 	port_number: INTEGER
 	base_url: detachable STRING
@@ -32,7 +32,7 @@ feature {NONE} -- Events
 	on_prepare
 			-- <Precursor>
 		local
-			app: NINO_APPLICATION
+			app: NINO_SERVICE
 			wt: WORKER_THREAD
 			e: EXECUTION_ENVIRONMENT
 		do