Bug 33216 Source actions in context menu on types inconsistency
1) select a type in the package explorer 2) bring up the context menu ->the source actions are shown in-line and the menu is huge. Given that we show a source submenu in other parts (e.g. the editor) and do the same for the refactoring actions we should also move the source actions into a submenu.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
protected int getLabelProviderFlags() {
		return JavaElementLabelProvider.SHOW_BASICS | JavaElementLabelProvider.SHOW_OVERLAY_ICONS |
				JavaElementLabelProvider.SHOW_SMALL_ICONS | JavaElementLabelProvider.SHOW_VARIABLE | JavaElementLabelProvider.SHOW_PARAMETERS;
	}
	/**
	 * Adds filters the viewer of this part.
	 */
	protected void addFilters() {
		
	}
	/**
	 * Creates the the content provider of this part.
	 */
	protected IContentProvider createContentProvider() {
		return new JavaBrowsingContentProvider(true, this);
	}
	protected void setInitialInput() {
		
		ISelection selection= getSite().getPage().getSelection();
		Object input= getSingleElementFromSelection(selection);
		if (!(input instanceof IJavaElement)) {
			
			input= getSite().getPage().getInput();
			if (!(input instanceof IJavaElement) && input instanceof IAdaptable)
				input= ((IAdaptable)input).getAdapter(IJavaElement.class);
		}
		setInput(findInputForJavaElement((IJavaElement)input));		
	}
	protected void setInitialSelection() {