NB: Simple workaround is for webmaster to put leading zeros in when they add content.

Another solution would be to do it inefficiently within the Composr database API. Load in all rows and do sorting in memory (sort_maps_by can now do natural sorting). This may actually be fine, as people will typically not need natural sorting when they have very large numbers of rows, it's for smaller more intuitive data sets.

Instead of implementing this, implementing #786 and related issues (manual reordering) may be fine.