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.

modules/basic_auth/basic_auth_module.e

@@ -109,9 +109,9 @@ feature -- Hooks
 			lnk: CMS_LOCAL_LINK
 		do
 			if attached a_response.current_user (a_response.request) as u then
-				create lnk.make (u.name +  " (Logout)", "/basic_auth_logoff?destination=" + a_response.request.request_uri)
+				create lnk.make (u.name +  " (Logout)", "basic_auth_logoff?destination=" + a_response.request.request_uri)
 			else
-				create lnk.make ("Login", "/basic_auth_login?destination=" + a_response.request.request_uri)
+				create lnk.make ("Login", "basic_auth_login?destination=" + a_response.request.request_uri)
 			end
 --			if not a_menu_system.primary_menu.has (lnk) then
 				lnk.set_weight (99)

modules/basic_auth/filter/basic_auth_filter.e

@@ -22,11 +22,12 @@ feature -- Basic operations
 			-- Execute the filter.
 		local
 			l_auth: HTTP_AUTHORIZATION
+			utf: UTF_CONVERTER
 		do
 			api.logger.put_debug (generator + ".execute ", Void)
 			create l_auth.make (req.http_authorization)
 			if attached req.raw_header_data as l_raw_data then
-			   api.logger.put_debug (generator + ".execute " + l_raw_data, Void)
+			   api.logger.put_debug (generator + ".execute " + utf.escaped_utf_32_string_to_utf_8_string_8 (l_raw_data), Void)
 			end
 				-- A valid user
 			if