remove initOwner(mainstage) from all dialogs

-To show different Logo for Dialogs

Author: ddamke

src/main/java/de/doubleslash/keeptime/view/ProjectsListViewController.java

@@ -176,7 +176,8 @@ private Optional<String> showDialogNoNoteSelected(Work currentWork) {
       noteDialog.setTitle("Empty Notes");
       noteDialog.setHeaderText("Switch projects without notes?");
       noteDialog.setContentText("What did you do for project '" + currentWork.getProject().getName() + "' ?");
-      noteDialog.initOwner(mainStage);
+      Stage importConfirmationStage = (Stage) noteDialog.getDialogPane().getScene().getWindow();
+      importConfirmationStage.getIcons().add(new Image(Resources.getResource(RESOURCE.ICON_MAIN).toString()));
 
       final Optional<String> result = noteDialog.showAndWait();
       return result;