Alessandro Pasotti 0cd21c91f1 Keep invalid relations and update them when the data source changes
Added a check for layer.isValid in relation.isValid, keep
relations in the manager even if they are not valid and
connect dataSourceChanged with updateRelationStatus
2018-11-05 10:24:35 +01:00
..
2018-07-02 06:16:49 -05:00