Make ::xowiki::Package default_locale react to changes in the connection locale by caching only when the parameter use_connection_locale is not set, use ::xowiki::Package default_locale result instead of always the connection locale to determine nls_language for new Pages and FormPages, so that default language for a particular xowiki instance is decided by use_connection_locale parameter
Increase the threshold to trigger volume too low message from experience in the wild, reset the counter for the grace period, so that user does not receive immediately a new error