ref #8389: revert disabling of allowOverride for default selection
ref #8389: disable allowOverride when 'use default' is selected
ref #8385: fixes in preferences - getDefaults() for all pages
ref #8294 i18n
change label for ID Namespace
ref #8294 Swap showIdInSource and ShowIdNamespace
ref #8294 Move supplemental data source preferences to sub menu