Bug 108017 [Markers] Disabling a marker type disables the whole filter
20050825 When you disable a marker type it disables the whole dialog.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/DialogMarkerFilter.java
ITableLabelProvider {
        /* (non-Javadoc)
         * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int)
         */
        public Image getColumnImage(Object element, int columnIndex) {
            return null;
        }
        /* (non-Javadoc)
         * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int)
         */
        public String getColumnText(Object element, int columnIndex) {
            if (!(element instanceof MarkerType)) {
                return ""; 
            }
            MarkerType type = (MarkerType) element;
            if (columnIndex == 0) {
                return type.getLabel();
            }
            if (columnIndex == 1) {
                String superTypes = ""; 
                MarkerType[] supers = type.getSupertypes();
                for (int i = 0; i < supers.length; i++) {
                    superTypes += supers[i].getLabel();
                    if (i < supers.length - 1) {