Minor changes

- using http_client library instead of libcurl directly
 - using implicit conversion to JSON_STRING to improve code readability
 - use ARRAYED_LIST instead of LINKED_LIST .. for performance.
 - cosmetic .. but still a lot of feature clauses are missing, comments, assertions ...

library/server/wsf_html/webcontrol/grid/wsf_entity.e

@@ -1,15 +1,15 @@
 note
 	description: "Summary description for {WSF_ENTITY}."
-	author: ""
 	date: "$Date$"
 	revision: "$Revision$"
 
 deferred class
 	WSF_ENTITY
 
-feature
+feature -- Access
 
-	get (field: STRING): detachable ANY
+	item (a_field: READABLE_STRING_GENERAL): detachable ANY
+			-- Value for field item `a_field'.
 		deferred
 		end