Bug 29914 Icons for "Sync with Editor", "Collapse All"
We currently have no colored (hover) icon for the "Sync with Editor" and "Collapse All" actions. Also there is not disabled icon for the "Sync with Editor" action.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/navigator/MainActionGroup.java
exportAction.setDisabledImageDescriptor(getImageDescriptor("dtool16/export_wiz.gif")); 
		exportAction.setImageDescriptor(getImageDescriptor("etool16/export_wiz.gif")); 
		exportAction.setHoverImageDescriptor(getImageDescriptor("ctool16/export_wiz.gif")); 
		collapseAllAction = new CollapseAllAction(navigator, ResourceNavigatorMessages.getString("CollapseAllAction.title"));
		collapseAllAction.setToolTipText(ResourceNavigatorMessages.getString("CollapseAllAction.toolTip")); 
		collapseAllAction.setImageDescriptor(getImageDescriptor("elcl16/collapseall.gif")); 
		
		
	}
	
	/**
	 * Makes the sub action groups.
	 */
	protected void makeSubGroups() {
		gotoGroup = new GotoActionGroup(navigator);
		openGroup = new OpenActionGroup(navigator);
		refactorGroup = new RefactorActionGroup(navigator);
		IPropertyChangeListener workingSetUpdater = new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				String property = event.getProperty();
				
				if (WorkingSetFilterActionGroup.CHANGE_WORKING_SET.equals(property)) {
					IResourceNavigator navigator = getNavigator();
					Object newValue = event.getNewValue();
					
					if (newValue instanceof IWorkingSet) {	
						navigator.setWorkingSet((IWorkingSet) newValue);
					}
					else 
					if (newValue == null) {