* +config.action_controller.page_cache_extension+ configures the extension used for cached pages saved to +page_cache_directory+. Defaults to +.html+
* +config.action_controller.perform_caching+ configures whether the application should perform caching or not. Set to _false_ in development mode, _true_ in production.
* +config.action_controller.default_charset+ specifies the default character set for all renders. The default is "utf-8".
* +config.action_controller.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, which is then used to log information from Action Controller. Set to nil to disable logging.
