admin: Display commit ID in admin interface

admin/api/settings.go

@@ -32,8 +32,14 @@ func getROSettings(_ httprouter.Params, body []byte) (interface{}, error) {
 		syncMtd = sync.GlobalImporter.Kind()
 	}
 
+	var syncId *string
+	if sync.GlobalImporter != nil {
+		syncId = sync.GlobalImporter.Id()
+	}
+
 	return map[string]interface{}{
 		"sync-type": reflect.TypeOf(sync.GlobalImporter).Name(),
+		"sync-id":   syncId,
 		"sync":      syncMtd,
 	}, nil
 }