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/ewsgi/src/helper/wgi_response_stream_buffer.e

@@ -23,7 +23,7 @@ feature {NONE} -- Initialization
 			output := a_output
 		end
 
-feature {WGI_APPLICATION} -- Commit
+feature {WGI_SERVICE} -- Commit
 
 	commit
 			-- Commit the current response

library/server/ewsgi/src/wgi_agent_service.e

@@ -1,14 +1,14 @@
 note
-	description: "Summary description for {WGI_AGENT_APPLICATION}."
+	description: "Summary description for {WGI_AGENT_SERVICE}."
 	author: ""
 	date: "$Date$"
 	revision: "$Revision$"
 
 class
-	WGI_AGENT_APPLICATION
+	WGI_AGENT_SERVICE
 
 inherit
-	WGI_APPLICATION
+	WGI_SERVICE
 
 create
 	make

library/server/ewsgi/src/wgi_service.e

@@ -1,6 +1,6 @@
 note
 	description: "[
-				WGI_APPLICATION
+				WGI_SERVICE
 			]"
 	specification: "EWSGI specification https://github.com/Eiffel-World/Eiffel-Web-Framework/wiki/EWSGI-specification"
 	legal: "See notice at end of class."
@@ -9,7 +9,7 @@ note
 	revision: "$Revision$"
 
 deferred class
-	WGI_APPLICATION
+	WGI_SERVICE
 
 feature -- Execution