if (resource != null) try { projectProperties = ProjectProperties.getProjectProperties(resource); } catch (SVNException e) {}
	private void refresh() {		entries = null;        // show a Busy Cursor during refresh		BusyIndicator.showWhile(tableHistoryViewer.getTable().getDisplay(), new Runnable() {			public void run() {				tableHistoryViewer.refresh();			}		});	}