Fix issue processwire/processwire-issues#523 prevent user from uninstalling admin themes defined by `$config->defaultAdminTheme`
Fix issue processwire/processwire-issues#523 prevent user from uninstalling admin themes defined by `$config->defaultAdminTheme`

OpenLGK/ProcessWire,sunlix/ProcessWire,OpenLGK/ProcessWire,sunlix/ProcessWire,sunlix/ProcessWire,sunlix/ProcessWire,OpenLGK/ProcessWire,OpenLGK/ProcessWire,sunlix/ProcessWire