Child DetachableTabs promoting to Parent

[Mitchell Hunter Hamilton]

Thank you so much for the swift response, regarding Issue #54. In testing for correctness with the previous issue, I ran into another bug. A parent DetachableTab with a DetachableTabPane as content with DetachTable Tabs inside of it exhibits some unexpected issues. Those child Tabs can be dragged to their parent's level and dropped there, breaking the parent/child hierarchy.

[Mitchell Hunter Hamilton]

I only modified your createTabContent() method from the demo code, please consult below

 private DetachableTabPane createTabContent() {
        DetachableTabPane tp = new DetachableTabPane();
                DetachableTab dt = new DetachableTab("Detachable Child Tab");
                tp.getTabs().add(dt);
                DetachableTabPane testTabPaneOne = new DetachableTabPane();
                TabPane testTabPaneTwo = new TabPane();
                DetachableTab testTabOne = new DetachableTab("Detachable Tab #1");
                DetachableTab testTabThree = new DetachableTab("Detachable Tab #2");
                DataFuseDesktopBaseTab testTabTwo = new DataFuseDesktopBaseTab();
                testTabTwo.setText("Regular Tab #2");
        testTabPaneOne.getTabs().add(testTabOne);
                testTabPaneOne.getTabs().add(testTabThree);
                testTabPaneTwo.getTabs().add(testTabTwo);
                SplitPane sp = new SplitPane();
                sp.getItems().add(testTabPaneOne);
                sp.getItems().add(testTabPaneTwo);
                dt.setContent(sp);


        return tp;
    }

[Amrullah]

You can use scope to prevent the child tabs promoted to their parent