Add sorting functionality

[Simon-Dirks]

view-a-LOD/src/app/config/settings.ts

Lines 153 to 167 in 43c896b

	sorting: {
	default: 'title-a-z',
	options: {
	'title-a-z': {
	fields: labelPredicates,
	label: 'Titel (A-Z)',
	order: SortOrder.Ascending,
	},
	'title-z-a': {
	fields: labelPredicates,
	label: 'Titel (Z-A)',
	order: SortOrder.Descending,
	},
	},
	},