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/configuration/cms_default_setup.e

@@ -39,17 +39,21 @@ feature {NONE} -- Initialization
 		end
 
 	configure
+		local
+			l_url: like site_url
 		do
 				--| Site id, used to identified a site, this could be set to a uuid, or else
 			site_id := text_item_or_default ("site.id", "_EWF_CMS_NO_ID_")
 
 				-- Site url: optional, but ending with a slash
-			site_url := string_8_item ("site_url")
-			if attached site_url as l_url and then not l_url.is_empty then
-				if l_url[l_url.count] /= '/' then
-					site_url := l_url + "/"
+			l_url := string_8_item ("site_url")
+			if l_url /= Void and then not l_url.is_empty then
+				if l_url [l_url.count] /= '/' then
+					l_url := l_url + "/"
 				end
 			end
+			site_url := l_url
+
 				-- Site name
 			site_name := text_item_or_default ("site.name", "EWF::CMS")
 

src/configuration/cms_setup.e

@@ -62,7 +62,7 @@ feature -- Access: Site
 			-- Mainly used for internal notification.
 
 	site_url: detachable READABLE_STRING_8
-			-- Optional base url of the site.
+			-- Optional url of current CMS site.
 
 	front_page_path: detachable READABLE_STRING_8
 			-- Optional path defining the front page.