need function to sort attachments

[ulkreutz]

In our team we add multiple attachments with the same (or very similar) name to one task. In the mean time the last one is the relevant (but sometimes we need the older ones as well).
In some cases there are muptile attachments with similar names. Then it would be very comfortable to sort the attachments by name.

We need a function to sort the attachments by date and to sort by name....

Thanks!