provide allowsNamespace function for ModelAny and ModelAnyAttribute
correct anyAttribute to initiate ModelAnyAttribute
fix anyAttribute namespace validation
fix any namespace validation
add check of role URIs to xbrl.3.5.2.4.5 validation
Bugzilla 495, testing for errant standard roles
handle issue where instance has invalid namespace and schemaLocation conflicting with schemaRef'ed DTS
Bugzilla 495