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/wsf/src/request/value/wsf_string_value.e

@@ -18,10 +18,13 @@ convert
 
 feature {NONE} -- Initialization
 
-	make (a_name: READABLE_STRING_GENERAL; a_string: like string)
+	make (a_name: READABLE_STRING_8; a_string: READABLE_STRING_8)
 		do
-			name := a_name.as_string_32
-			string := a_string
+			name := url_decoded_string (a_name)
+			string := url_decoded_string (a_string)
+
+			url_encoded_name := a_name
+			url_encoded_string := a_string
 		end
 
 feature -- Access
@@ -30,6 +33,10 @@ feature -- Access
 
 	string: READABLE_STRING_32
 
+	url_encoded_name: READABLE_STRING_32
+
+	url_encoded_string: READABLE_STRING_32
+
 feature -- Helper
 
 	same_string (a_other: READABLE_STRING_GENERAL): BOOLEAN
@@ -58,6 +65,19 @@ feature -- Conversion
 			create Result.make_from_string (string)
 		end
 
+feature {NONE} -- Implementation
+
+	url_decoded_string (s: READABLE_STRING_8): READABLE_STRING_32
+			-- Decoded url-encoded string `s'
+		do
+			Result := url_encoder.decoded_string (s)
+		end
+
+	url_encoder: URL_ENCODER
+		once
+			create Result
+		end
+
 ;note
 	copyright: "2011-2011, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"