Added support for base_url (i.e the CMS can be hosted on the root, or sub folder).

Local paths are relative to cms site url (i.e no starting slash).
Favor CMS_RESPONSE.absolute_url and url .. instead of using directly WSF_REQUEST.absolute_script_url and script_url.
Handled unicode truncation issue for logger.
Code cleaning.

src/service/misc/cms_request_util.e

@@ -70,14 +70,4 @@ feature -- Media Type
 			end
 		end
 
-feature -- Absolute Host
-
-	absolute_host (req: WSF_REQUEST; a_path:STRING): STRING
-		do
-			Result := req.absolute_script_url (a_path)
-			if Result.last_index_of ('/', Result.count) = Result.count then
-				Result.remove_tail (1)
-			end
-		end
-
 end