Bug 203974 [Markers] [Markers] markers view: Twistis on configure filter dialog not correctly laid out
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/FiltersConfigurationDialog.java
private Collection filterGroups;
	private CheckboxTableViewer filtersList;
	private GroupFilterConfigurationArea scopeArea = new ScopeArea();
	private MarkerFieldFilterGroup selectedFilterGroup;
	private ScrolledForm form;
	private MarkerContentGenerator contentGenerator;
	private Collection filterAreas;
	private boolean andFilters = false;
	private Button removeButton;
	/**
	 * Create a new instance of the receiver on group.
	 * 
	 * @param parentShell
	 * @param generator
	 *            The MarkerContentGenerator to apply this to
	 */