Set cursor on record below the first record deleted in the list for issue75

tryton/gui/window/view_form/screen/screen.py

@@ -473,9 +473,15 @@ class Screen(SignalEvent):
                 except Exception, exception:
                     common.process_exception(exception, self.window)
                     return False
+            idx = self.models.models.index(
+                    self.current_view.sel_models_get()[0])
             for model in self.current_view.sel_models_get():
                 self.models.remove(model)
-            self.current_model = None
+            if self.models.models:
+                idx = min(idx, len(self.models.models)-1)
+                self.current_model = self.models.models[idx]
+            else:
+                self.current_model = None
             if reload_ids:
                 self.models.reload(reload_ids)
             self.current_view.set_cursor()