Revisited the format, filter and content type integration.

Now, all formats used by CMS are instances of CMS_FORMAT, mainly to prepare the admin section in order to define format by config/database.
CMS_NODE_API provides all queries to access the content types, and formats, this way a module can easily alter the formats by adding a new filter.

TODO: see how to integrate permission checking, to control who can use a specific format (such as full HTML).

modules/openid/filter/cms_openid_filter.e

@@ -34,9 +34,6 @@ feature -- Basic operations
 
 	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
 			-- Execute the filter.
-		local
-			o: OPENID_CONSUMER
-			v: OPENID_CONSUMER_VALIDATION
 
 		do
 			api.logger.put_debug (generator + ".execute ", Void)

modules/openid/persitence/cms_openid_storage_sql.e

@@ -105,7 +105,6 @@ feature -- Change: User OAuth
 		-- <Precursor>.
 		local
 			l_parameters: STRING_TABLE [detachable ANY]
-			l_string: STRING
 		do
 			error_handler.reset
 			sql_begin_transaction