Continued reducing WGI and move implementation to WSF (Web Server Framework)

Removed many usage of READABLE_STRING_GENERAL in favor to READABLE_STRING_8
   to avoid potential nasty issues in user's code
URI-template is working only with STRING_8, then changed any _GENERAL or _STRING_32 to _STRING_8

library/server/request/router/src/uri/request_uri_handler_context.e

@@ -23,11 +23,11 @@ feature {NONE} -- Initialization
 
 feature -- Query	
 
-	path_parameter (a_name: READABLE_STRING_GENERAL): detachable WSF_VALUE
+	path_parameter (a_name: READABLE_STRING_8): detachable WSF_VALUE
 		do
 		end
 
-	query_parameter (a_name: READABLE_STRING_GENERAL): detachable WSF_VALUE
+	query_parameter (a_name: READABLE_STRING_8): detachable WSF_VALUE
 		do
 			Result := request.query_parameter (a_name)
 		end