Add option to disable sort on the AbstractListing datatable

The columns of the datatable in the AbstractListingPlugin are re-used wherever they appear (retrieved by a service). The datatable implementation internally checks if an IColumn is sortable or not, so to make a datatable unsortable, we'll have to create copies of all these columns and configure a new service to retrieve them.

A different approach would be to add an option to a TableDefinition to disable sorting on the whole table.