* src/plugins/RelCalc.py: use empty string instead of None

* src/EditPerson.py: pychecker fixes
* src/EditPlace.py: pychecker fixes
* src/EditSource.py: pychecker fixes
* src/GenericFilter.py: pychecker fixes
* src/GrampsCfg.py: pychecker fixes
* src/ImageSelect.py: pychecker fixes
* src/ListModel.py: pychecker fixes
* src/MediaView.py; pychecker fixes
* src/MergeData.py: pychecker fixes
* src/PedView.py: pychecker fixes
* src/PeopleView.py: pychecker fixes
* src/PlaceView.py: pychecker fixes
* src/Plugins.py: pychecker fixes
* src/RelImage.py: pychecker fixes
* src/Relationship.py: pychecker fixes


svn: r3450

src/plugins/RelCalc.py

@@ -99,7 +99,7 @@ class RelCalc:
                 continue
             val = self.db.get_person_from_handle(key).get_display_info()
             event = self.db.find_event_from_handle(val[3])
-            event_date = None
+            event_date = ""
             if event:
                 event_date = event.get_date ()
             self.clist.add([val[0],val[1],event_date,val[5],val[6]],p.get_handle())