Mark divelist changed when deleting a dive

Fixes #232

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/divelistview.cpp

@@ -433,6 +433,7 @@ void DiveListView::deleteDive()
 			else
 				mainWindow()->cleanUpEmpty();
 		}
+		mark_divelist_changed(TRUE);
 	}
 	mainWindow()->refreshDisplay();
 	reload(currentLayout, false);